./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya --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 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:27:34,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:27:34,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:27:34,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:27:34,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:27:34,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:27:34,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:27:34,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:27:34,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:27:34,580 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:27:34,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:27:34,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:27:34,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:27:34,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:27:34,583 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:27:34,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:27:34,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:27:34,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:27:34,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:27:34,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:27:34,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:27:34,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:27:34,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:27:34,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:27:34,589 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:27:34,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:27:34,589 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:27:34,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:27:34,590 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:27:34,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:27:34,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:27:34,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:27:34,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:27:34,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:27:34,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:27:34,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:27:34,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:27:34,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:27:34,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:27:34,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:27:34,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:27:34,593 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:27:34,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:27:34,594 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:27:34,594 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_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2023-11-29 00:27:34,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:27:34,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:27:34,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:27:34,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:27:34,849 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:27:34,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound50.c [2023-11-29 00:27:37,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:27:37,702 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:27:37,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound50.c [2023-11-29 00:27:37,708 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/data/22c61ab6c/a1d6c8de4c40411ab5c15b58194c8b26/FLAGf7e6ff35a [2023-11-29 00:27:37,726 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/data/22c61ab6c/a1d6c8de4c40411ab5c15b58194c8b26 [2023-11-29 00:27:37,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:27:37,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:27:37,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:27:37,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:27:37,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:27:37,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589ee7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37, skipping insertion in model container [2023-11-29 00:27:37,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:27:37,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:27:37,907 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:27:37,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:27:37,934 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:27:37,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37 WrapperNode [2023-11-29 00:27:37,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:27:37,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:27:37,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:27:37,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:27:37,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,964 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-29 00:27:37,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:27:37,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:27:37,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:27:37,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:27:37,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,989 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:27:37,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:37,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:27:38,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:27:38,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:27:38,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:27:38,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (1/1) ... [2023-11-29 00:27:38,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:27:38,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:38,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:27:38,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:27:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:27:38,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:27:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:27:38,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:27:38,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:27:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:27:38,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:27:38,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:27:38,125 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:27:38,128 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:27:38,318 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:27:38,345 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:27:38,345 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:27:38,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:27:38 BoogieIcfgContainer [2023-11-29 00:27:38,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:27:38,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:27:38,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:27:38,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:27:38,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:27:37" (1/3) ... [2023-11-29 00:27:38,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6318c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:27:38, skipping insertion in model container [2023-11-29 00:27:38,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:27:37" (2/3) ... [2023-11-29 00:27:38,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6318c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:27:38, skipping insertion in model container [2023-11-29 00:27:38,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:27:38" (3/3) ... [2023-11-29 00:27:38,354 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound50.c [2023-11-29 00:27:38,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:27:38,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 00:27:38,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:27:38,421 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;@e127504, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:27:38,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 00:27:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 32 states have (on average 1.8125) internal successors, (58), 52 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:27:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:27:38,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:38,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:38,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:38,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:38,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1455350132, now seen corresponding path program 1 times [2023-11-29 00:27:38,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:38,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267051622] [2023-11-29 00:27:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:38,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:38,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:38,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267051622] [2023-11-29 00:27:38,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:27:38,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846276301] [2023-11-29 00:27:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:38,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:38,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:38,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:38,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:27:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:38,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:27:38,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:38,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846276301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:27:38,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426698790] [2023-11-29 00:27:38,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:38,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:27:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:38,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:27:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:27:38,686 INFO L87 Difference]: Start difference. First operand has 59 states, 32 states have (on average 1.8125) internal successors, (58), 52 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-29 00:27:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:38,714 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2023-11-29 00:27:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:27:38,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 14 [2023-11-29 00:27:38,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:38,723 INFO L225 Difference]: With dead ends: 116 [2023-11-29 00:27:38,723 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 00:27:38,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:27:38,729 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:38,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:27:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 00:27:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-29 00:27:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 50 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:27:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-11-29 00:27:38,767 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 14 [2023-11-29 00:27:38,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:38,768 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-11-29 00:27:38,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-11-29 00:27:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-11-29 00:27:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 00:27:38,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:38,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:38,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:38,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:27:38,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:38,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:38,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1455350117, now seen corresponding path program 1 times [2023-11-29 00:27:38,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:38,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280881359] [2023-11-29 00:27:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:38,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:38,992 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:38,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939986821] [2023-11-29 00:27:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:38,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:38,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:39,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:27:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:39,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:27:39,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:39,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:39,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:39,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280881359] [2023-11-29 00:27:39,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:39,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939986821] [2023-11-29 00:27:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939986821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:39,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:39,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:27:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055791472] [2023-11-29 00:27:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:39,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:27:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:39,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:27:39,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:27:39,204 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:27:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:39,375 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2023-11-29 00:27:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:27:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-29 00:27:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:39,378 INFO L225 Difference]: With dead ends: 96 [2023-11-29 00:27:39,378 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 00:27:39,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:27:39,381 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 124 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:39,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 120 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 00:27:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2023-11-29 00:27:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.66) internal successors, (83), 69 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:27:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2023-11-29 00:27:39,396 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 14 [2023-11-29 00:27:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:39,396 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2023-11-29 00:27:39,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:27:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2023-11-29 00:27:39,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:27:39,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:39,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:39,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:27:39,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:39,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:39,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:39,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1567877597, now seen corresponding path program 1 times [2023-11-29 00:27:39,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:39,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956415689] [2023-11-29 00:27:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:39,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:39,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358115960] [2023-11-29 00:27:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:39,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:39,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:39,616 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:39,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:27:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:39,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:27:39,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:39,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956415689] [2023-11-29 00:27:39,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358115960] [2023-11-29 00:27:39,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358115960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:39,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:39,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:27:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408412503] [2023-11-29 00:27:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:39,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:27:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:27:39,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:39,695 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-29 00:27:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:39,752 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2023-11-29 00:27:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:27:39,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 16 [2023-11-29 00:27:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:39,754 INFO L225 Difference]: With dead ends: 79 [2023-11-29 00:27:39,754 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 00:27:39,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:39,756 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:39,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 52 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:27:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 00:27:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 00:27:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 66 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:27:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2023-11-29 00:27:39,770 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 16 [2023-11-29 00:27:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:39,770 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2023-11-29 00:27:39,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-29 00:27:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2023-11-29 00:27:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 00:27:39,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:39,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:39,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:27:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:39,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:39,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1359565303, now seen corresponding path program 1 times [2023-11-29 00:27:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:39,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597185980] [2023-11-29 00:27:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:39,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952684048] [2023-11-29 00:27:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:40,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:40,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:40,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:40,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:27:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:40,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:27:40,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:40,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:40,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597185980] [2023-11-29 00:27:40,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952684048] [2023-11-29 00:27:40,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952684048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:40,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:40,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:27:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158486296] [2023-11-29 00:27:40,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:27:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:27:40,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:40,077 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 00:27:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:40,142 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2023-11-29 00:27:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:27:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17 [2023-11-29 00:27:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:40,144 INFO L225 Difference]: With dead ends: 119 [2023-11-29 00:27:40,145 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 00:27:40,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:40,146 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:40,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 64 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:40,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 00:27:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2023-11-29 00:27:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 90 states have internal predecessors, (108), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 00:27:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2023-11-29 00:27:40,162 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 17 [2023-11-29 00:27:40,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:40,163 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2023-11-29 00:27:40,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 00:27:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2023-11-29 00:27:40,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:27:40,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:40,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:40,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:27:40,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:40,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:40,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:40,365 INFO L85 PathProgramCache]: Analyzing trace with hash -803148513, now seen corresponding path program 1 times [2023-11-29 00:27:40,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:40,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041301381] [2023-11-29 00:27:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:40,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:40,375 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:40,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81765220] [2023-11-29 00:27:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:40,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:40,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:40,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:27:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:40,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:27:40,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:40,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:40,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:40,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041301381] [2023-11-29 00:27:40,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:40,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81765220] [2023-11-29 00:27:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81765220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:40,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 00:27:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49671124] [2023-11-29 00:27:40,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:40,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:27:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:27:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:40,681 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:27:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:40,956 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2023-11-29 00:27:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:27:40,959 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-29 00:27:40,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:40,960 INFO L225 Difference]: With dead ends: 111 [2023-11-29 00:27:40,960 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 00:27:40,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:27:40,962 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 102 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:40,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 89 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:27:40,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 00:27:40,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2023-11-29 00:27:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.3875) internal successors, (111), 94 states have internal predecessors, (111), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 00:27:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2023-11-29 00:27:40,975 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 18 [2023-11-29 00:27:40,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:40,976 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2023-11-29 00:27:40,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 00:27:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2023-11-29 00:27:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 00:27:40,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:40,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:40,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:41,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:41,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:41,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash 872199929, now seen corresponding path program 1 times [2023-11-29 00:27:41,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:41,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008547313] [2023-11-29 00:27:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:41,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:41,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025357669] [2023-11-29 00:27:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:41,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:41,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:41,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:41,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:27:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:41,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:27:41,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:41,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:41,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:41,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008547313] [2023-11-29 00:27:41,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:41,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025357669] [2023-11-29 00:27:41,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025357669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:41,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:27:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60002643] [2023-11-29 00:27:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:41,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:27:41,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:27:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:27:41,417 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:27:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:41,582 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2023-11-29 00:27:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:27:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-29 00:27:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:41,584 INFO L225 Difference]: With dead ends: 104 [2023-11-29 00:27:41,584 INFO L226 Difference]: Without dead ends: 103 [2023-11-29 00:27:41,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:27:41,585 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:41,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 86 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-29 00:27:41,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-29 00:27:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.375) internal successors, (110), 94 states have internal predecessors, (110), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 00:27:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2023-11-29 00:27:41,599 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 19 [2023-11-29 00:27:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:41,600 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2023-11-29 00:27:41,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 00:27:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2023-11-29 00:27:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 00:27:41,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:41,602 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:27:41,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:27:41,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 00:27:41,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:41,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2088001174, now seen corresponding path program 1 times [2023-11-29 00:27:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309000388] [2023-11-29 00:27:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:41,820 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:41,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667318292] [2023-11-29 00:27:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:41,821 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:41,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:27:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:41,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:27:41,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:41,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:41,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309000388] [2023-11-29 00:27:41,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667318292] [2023-11-29 00:27:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667318292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:41,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:41,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:27:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584494854] [2023-11-29 00:27:41,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:41,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:27:41,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:27:41,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:41,908 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:41,943 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-11-29 00:27:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:27:41,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-29 00:27:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:41,944 INFO L225 Difference]: With dead ends: 103 [2023-11-29 00:27:41,945 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 00:27:41,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:27:41,946 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 59 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:41,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 57 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:27:41,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 00:27:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-29 00:27:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.3375) internal successors, (107), 92 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 00:27:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-11-29 00:27:41,957 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 32 [2023-11-29 00:27:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:41,957 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-11-29 00:27:41,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:41,958 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-11-29 00:27:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 00:27:41,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:41,959 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:27:41,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:27:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 00:27:42,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:42,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1400336030, now seen corresponding path program 1 times [2023-11-29 00:27:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:42,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603528891] [2023-11-29 00:27:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:42,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:42,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912873079] [2023-11-29 00:27:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:42,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:42,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:42,173 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:42,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:27:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:42,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:27:42,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:42,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:42,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:42,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603528891] [2023-11-29 00:27:42,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:42,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912873079] [2023-11-29 00:27:42,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912873079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:42,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:42,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 00:27:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357895833] [2023-11-29 00:27:42,509 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:42,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:27:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:27:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:27:42,510 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:42,611 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2023-11-29 00:27:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:27:42,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-11-29 00:27:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:42,613 INFO L225 Difference]: With dead ends: 110 [2023-11-29 00:27:42,613 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 00:27:42,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:27:42,614 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 84 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:42,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 65 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 00:27:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 99. [2023-11-29 00:27:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.3125) internal successors, (105), 90 states have internal predecessors, (105), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 00:27:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-11-29 00:27:42,625 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 34 [2023-11-29 00:27:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-11-29 00:27:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-11-29 00:27:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:27:42,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:42,627 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] [2023-11-29 00:27:42,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:27:42,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:42,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:42,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash -460743922, now seen corresponding path program 1 times [2023-11-29 00:27:42,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:42,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761740281] [2023-11-29 00:27:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:42,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:42,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574323054] [2023-11-29 00:27:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:42,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:42,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:27:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:42,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:27:42,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:43,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:43,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:43,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761740281] [2023-11-29 00:27:43,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:43,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574323054] [2023-11-29 00:27:43,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574323054] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:43,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:43,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 00:27:43,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49582626] [2023-11-29 00:27:43,206 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:43,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:27:43,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:27:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:27:43,208 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:43,331 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2023-11-29 00:27:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:27:43,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2023-11-29 00:27:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:43,333 INFO L225 Difference]: With dead ends: 157 [2023-11-29 00:27:43,334 INFO L226 Difference]: Without dead ends: 154 [2023-11-29 00:27:43,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:43,335 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 122 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:43,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 82 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-29 00:27:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2023-11-29 00:27:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 122 states have internal predecessors, (149), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:27:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 165 transitions. [2023-11-29 00:27:43,350 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 165 transitions. Word has length 35 [2023-11-29 00:27:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:43,350 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 165 transitions. [2023-11-29 00:27:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2023-11-29 00:27:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-29 00:27:43,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:43,352 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-11-29 00:27:43,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:43,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:43,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:43,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1861508742, now seen corresponding path program 1 times [2023-11-29 00:27:43,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:43,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423500508] [2023-11-29 00:27:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:43,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:43,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888633648] [2023-11-29 00:27:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:43,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:43,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:43,569 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:43,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:27:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:43,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:27:43,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:43,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:43,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:43,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423500508] [2023-11-29 00:27:43,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888633648] [2023-11-29 00:27:43,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888633648] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:43,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:43,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-11-29 00:27:43,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356448993] [2023-11-29 00:27:43,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:43,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:27:43,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:27:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:27:43,828 INFO L87 Difference]: Start difference. First operand 133 states and 165 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:27:44,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:44,055 INFO L93 Difference]: Finished difference Result 141 states and 173 transitions. [2023-11-29 00:27:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:27:44,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-11-29 00:27:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:44,057 INFO L225 Difference]: With dead ends: 141 [2023-11-29 00:27:44,057 INFO L226 Difference]: Without dead ends: 135 [2023-11-29 00:27:44,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:27:44,058 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 112 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:44,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 93 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-29 00:27:44,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-11-29 00:27:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 123 states have internal predecessors, (148), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:27:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2023-11-29 00:27:44,070 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 37 [2023-11-29 00:27:44,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:44,070 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2023-11-29 00:27:44,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:27:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2023-11-29 00:27:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 00:27:44,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:44,072 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-11-29 00:27:44,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:44,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:27:44,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:44,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1872196208, now seen corresponding path program 1 times [2023-11-29 00:27:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:44,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007459333] [2023-11-29 00:27:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:44,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678349932] [2023-11-29 00:27:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:44,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:44,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:44,281 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:44,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:27:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:44,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:27:44,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:44,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:44,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007459333] [2023-11-29 00:27:44,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:44,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678349932] [2023-11-29 00:27:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678349932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:44,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:44,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:27:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514499109] [2023-11-29 00:27:44,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:44,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:27:44,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:27:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:44,382 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:44,446 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2023-11-29 00:27:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:27:44,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-11-29 00:27:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:44,447 INFO L225 Difference]: With dead ends: 136 [2023-11-29 00:27:44,447 INFO L226 Difference]: Without dead ends: 135 [2023-11-29 00:27:44,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:44,448 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:44,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-29 00:27:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-11-29 00:27:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 123 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:27:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2023-11-29 00:27:44,460 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 38 [2023-11-29 00:27:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:44,460 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2023-11-29 00:27:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2023-11-29 00:27:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 00:27:44,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:44,461 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2023-11-29 00:27:44,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:27:44,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:44,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:44,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:44,667 INFO L85 PathProgramCache]: Analyzing trace with hash 693347430, now seen corresponding path program 1 times [2023-11-29 00:27:44,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:44,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913972722] [2023-11-29 00:27:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:44,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:44,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:44,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031085422] [2023-11-29 00:27:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:44,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:44,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:27:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:44,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:27:44,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:44,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:45,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913972722] [2023-11-29 00:27:45,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031085422] [2023-11-29 00:27:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031085422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:45,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:45,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-11-29 00:27:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193694362] [2023-11-29 00:27:45,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:27:45,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:27:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:27:45,042 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:27:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:45,225 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2023-11-29 00:27:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:27:45,226 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2023-11-29 00:27:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:45,227 INFO L225 Difference]: With dead ends: 134 [2023-11-29 00:27:45,227 INFO L226 Difference]: Without dead ends: 131 [2023-11-29 00:27:45,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:27:45,229 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:45,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 59 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-29 00:27:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2023-11-29 00:27:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 117 states have internal predecessors, (135), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:27:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2023-11-29 00:27:45,241 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 38 [2023-11-29 00:27:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:45,241 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2023-11-29 00:27:45,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 00:27:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2023-11-29 00:27:45,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 00:27:45,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:45,243 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-11-29 00:27:45,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:27:45,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:45,448 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:45,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2091459640, now seen corresponding path program 1 times [2023-11-29 00:27:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710086249] [2023-11-29 00:27:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:45,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:45,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323571689] [2023-11-29 00:27:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:45,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:45,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:45,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:45,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:27:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:45,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:27:45,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:45,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:45,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:45,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710086249] [2023-11-29 00:27:45,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:45,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323571689] [2023-11-29 00:27:45,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323571689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:45,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:45,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:27:45,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011669202] [2023-11-29 00:27:45,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:45,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:27:45,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:45,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:27:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:45,542 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:45,594 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2023-11-29 00:27:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:27:45,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-11-29 00:27:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:45,595 INFO L225 Difference]: With dead ends: 130 [2023-11-29 00:27:45,595 INFO L226 Difference]: Without dead ends: 129 [2023-11-29 00:27:45,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:27:45,596 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:45,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 49 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:27:45,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-29 00:27:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-11-29 00:27:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 117 states have internal predecessors, (132), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:27:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2023-11-29 00:27:45,608 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 39 [2023-11-29 00:27:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:45,609 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2023-11-29 00:27:45,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:27:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2023-11-29 00:27:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 00:27:45,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:45,610 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-11-29 00:27:45,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:27:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:45,815 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:45,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash 18933906, now seen corresponding path program 1 times [2023-11-29 00:27:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525390138] [2023-11-29 00:27:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:45,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:45,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723519807] [2023-11-29 00:27:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:45,824 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:45,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:27:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:45,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:27:45,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:46,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:27:46,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525390138] [2023-11-29 00:27:46,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723519807] [2023-11-29 00:27:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723519807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:46,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:46,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 00:27:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375928875] [2023-11-29 00:27:46,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:27:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:27:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:27:46,138 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:27:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:46,833 INFO L93 Difference]: Finished difference Result 167 states and 192 transitions. [2023-11-29 00:27:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:27:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2023-11-29 00:27:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:46,835 INFO L225 Difference]: With dead ends: 167 [2023-11-29 00:27:46,835 INFO L226 Difference]: Without dead ends: 166 [2023-11-29 00:27:46,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:27:46,836 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 136 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:46,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 72 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:27:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-29 00:27:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 127. [2023-11-29 00:27:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 116 states have internal predecessors, (130), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 00:27:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2023-11-29 00:27:46,844 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 39 [2023-11-29 00:27:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:46,845 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2023-11-29 00:27:46,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:27:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2023-11-29 00:27:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 00:27:46,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:46,846 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 00:27:46,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:27:47,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:47,046 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:47,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1223098600, now seen corresponding path program 1 times [2023-11-29 00:27:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:47,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391826736] [2023-11-29 00:27:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:47,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:47,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780591360] [2023-11-29 00:27:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:47,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:47,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:47,055 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:47,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:27:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:47,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:27:47,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:27:47,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:27:47,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:47,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391826736] [2023-11-29 00:27:47,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:47,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780591360] [2023-11-29 00:27:47,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780591360] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:47,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:47,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 00:27:47,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337406180] [2023-11-29 00:27:47,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:47,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:27:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:47,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:27:47,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:27:47,176 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 00:27:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:47,255 INFO L93 Difference]: Finished difference Result 293 states and 345 transitions. [2023-11-29 00:27:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:27:47,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 47 [2023-11-29 00:27:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:47,258 INFO L225 Difference]: With dead ends: 293 [2023-11-29 00:27:47,258 INFO L226 Difference]: Without dead ends: 291 [2023-11-29 00:27:47,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:27:47,259 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:47,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 87 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-29 00:27:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 254. [2023-11-29 00:27:47,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 230 states have (on average 1.1565217391304348) internal successors, (266), 234 states have internal predecessors, (266), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-29 00:27:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 300 transitions. [2023-11-29 00:27:47,286 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 300 transitions. Word has length 47 [2023-11-29 00:27:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:47,286 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 300 transitions. [2023-11-29 00:27:47,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 00:27:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 300 transitions. [2023-11-29 00:27:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 00:27:47,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:47,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-11-29 00:27:47,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:27:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:47,492 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:47,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1565427033, now seen corresponding path program 2 times [2023-11-29 00:27:47,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:47,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877270908] [2023-11-29 00:27:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:47,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:47,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:47,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366719161] [2023-11-29 00:27:47,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:27:47,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:47,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:47,500 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:47,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:27:47,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:27:47,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:47,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:27:47,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:27:47,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:47,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877270908] [2023-11-29 00:27:47,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366719161] [2023-11-29 00:27:47,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366719161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:47,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:47,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-29 00:27:47,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888986238] [2023-11-29 00:27:47,779 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:47,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:27:47,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:47,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:27:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:27:47,780 INFO L87 Difference]: Start difference. First operand 254 states and 300 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:27:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:47,889 INFO L93 Difference]: Finished difference Result 423 states and 500 transitions. [2023-11-29 00:27:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:27:47,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2023-11-29 00:27:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:47,891 INFO L225 Difference]: With dead ends: 423 [2023-11-29 00:27:47,892 INFO L226 Difference]: Without dead ends: 418 [2023-11-29 00:27:47,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:27:47,892 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:47,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 117 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-29 00:27:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 279. [2023-11-29 00:27:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 254 states have (on average 1.1496062992125984) internal successors, (292), 258 states have internal predecessors, (292), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 00:27:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 328 transitions. [2023-11-29 00:27:47,921 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 328 transitions. Word has length 55 [2023-11-29 00:27:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:47,922 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 328 transitions. [2023-11-29 00:27:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:27:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 328 transitions. [2023-11-29 00:27:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 00:27:47,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:47,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 00:27:47,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:27:48,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:48,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:48,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1638756971, now seen corresponding path program 2 times [2023-11-29 00:27:48,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:48,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27465160] [2023-11-29 00:27:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:48,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:48,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545229269] [2023-11-29 00:27:48,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:27:48,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:48,131 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:48,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:27:48,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:27:48,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:48,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:27:48,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:27:48,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:27:48,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27465160] [2023-11-29 00:27:48,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545229269] [2023-11-29 00:27:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545229269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:48,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:48,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2023-11-29 00:27:48,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503120646] [2023-11-29 00:27:48,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:48,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:27:48,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:48,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:27:48,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:27:48,570 INFO L87 Difference]: Start difference. First operand 279 states and 328 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 00:27:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:48,865 INFO L93 Difference]: Finished difference Result 339 states and 397 transitions. [2023-11-29 00:27:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:27:48,866 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 57 [2023-11-29 00:27:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:48,868 INFO L225 Difference]: With dead ends: 339 [2023-11-29 00:27:48,868 INFO L226 Difference]: Without dead ends: 338 [2023-11-29 00:27:48,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:27:48,870 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 111 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:48,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 96 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:27:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-29 00:27:48,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 333. [2023-11-29 00:27:48,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 304 states have (on average 1.138157894736842) internal successors, (346), 308 states have internal predecessors, (346), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 00:27:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 390 transitions. [2023-11-29 00:27:48,904 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 390 transitions. Word has length 57 [2023-11-29 00:27:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:48,904 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 390 transitions. [2023-11-29 00:27:48,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 00:27:48,905 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 390 transitions. [2023-11-29 00:27:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 00:27:48,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:48,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 00:27:48,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:27:49,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:27:49,106 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:49,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:49,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1117961183, now seen corresponding path program 1 times [2023-11-29 00:27:49,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:49,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757575384] [2023-11-29 00:27:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:49,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:49,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107503121] [2023-11-29 00:27:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:49,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:49,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:49,115 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:49,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:27:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:49,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:27:49,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:27:49,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:27:49,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757575384] [2023-11-29 00:27:49,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107503121] [2023-11-29 00:27:49,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107503121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:27:49,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:27:49,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:27:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204391099] [2023-11-29 00:27:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:49,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:27:49,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:49,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:27:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:27:49,221 INFO L87 Difference]: Start difference. First operand 333 states and 390 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:27:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:49,297 INFO L93 Difference]: Finished difference Result 541 states and 633 transitions. [2023-11-29 00:27:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:27:49,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2023-11-29 00:27:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:49,299 INFO L225 Difference]: With dead ends: 541 [2023-11-29 00:27:49,299 INFO L226 Difference]: Without dead ends: 307 [2023-11-29 00:27:49,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:27:49,301 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:49,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 87 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:27:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-29 00:27:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 304. [2023-11-29 00:27:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1263537906137184) internal successors, (312), 281 states have internal predecessors, (312), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 00:27:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 352 transitions. [2023-11-29 00:27:49,321 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 352 transitions. Word has length 57 [2023-11-29 00:27:49,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:49,322 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 352 transitions. [2023-11-29 00:27:49,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 00:27:49,322 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 352 transitions. [2023-11-29 00:27:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 00:27:49,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:49,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:49,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:27:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:27:49,527 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:49,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1266525174, now seen corresponding path program 1 times [2023-11-29 00:27:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145085482] [2023-11-29 00:27:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:49,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:49,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:49,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73160185] [2023-11-29 00:27:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:49,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:49,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:49,545 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:49,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:27:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:49,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:27:49,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 00:27:49,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 00:27:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145085482] [2023-11-29 00:27:49,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73160185] [2023-11-29 00:27:49,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73160185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:49,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:49,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-29 00:27:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357577175] [2023-11-29 00:27:49,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:49,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:27:49,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:49,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:27:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:27:49,757 INFO L87 Difference]: Start difference. First operand 304 states and 352 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 00:27:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:49,918 INFO L93 Difference]: Finished difference Result 332 states and 376 transitions. [2023-11-29 00:27:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:27:49,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 75 [2023-11-29 00:27:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:49,920 INFO L225 Difference]: With dead ends: 332 [2023-11-29 00:27:49,920 INFO L226 Difference]: Without dead ends: 308 [2023-11-29 00:27:49,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:27:49,921 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 43 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:49,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 178 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-29 00:27:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2023-11-29 00:27:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1191335740072201) internal successors, (310), 281 states have internal predecessors, (310), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 00:27:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 350 transitions. [2023-11-29 00:27:49,944 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 350 transitions. Word has length 75 [2023-11-29 00:27:49,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:49,944 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 350 transitions. [2023-11-29 00:27:49,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 00:27:49,944 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 350 transitions. [2023-11-29 00:27:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 00:27:49,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:49,945 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:49,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:27:50,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:50,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:50,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1935764544, now seen corresponding path program 3 times [2023-11-29 00:27:50,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:50,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921680837] [2023-11-29 00:27:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:50,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137703381] [2023-11-29 00:27:50,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:27:50,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:50,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:50,154 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:50,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:27:50,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:27:50,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:50,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:27:50,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 38 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 00:27:50,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:51,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921680837] [2023-11-29 00:27:51,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137703381] [2023-11-29 00:27:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137703381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:51,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:51,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-29 00:27:51,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876150723] [2023-11-29 00:27:51,527 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:51,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:27:51,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:27:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:27:51,528 INFO L87 Difference]: Start difference. First operand 304 states and 350 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:27:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:51,606 INFO L93 Difference]: Finished difference Result 307 states and 350 transitions. [2023-11-29 00:27:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:27:51,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2023-11-29 00:27:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:51,608 INFO L225 Difference]: With dead ends: 307 [2023-11-29 00:27:51,608 INFO L226 Difference]: Without dead ends: 306 [2023-11-29 00:27:51,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:51,609 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:51,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 83 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:27:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-29 00:27:51,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2023-11-29 00:27:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 277 states have (on average 1.1155234657039712) internal successors, (309), 281 states have internal predecessors, (309), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 00:27:51,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 349 transitions. [2023-11-29 00:27:51,638 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 349 transitions. Word has length 75 [2023-11-29 00:27:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:51,638 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 349 transitions. [2023-11-29 00:27:51,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 00:27:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 349 transitions. [2023-11-29 00:27:51,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 00:27:51,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:51,640 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:51,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:27:51,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:51,840 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:51,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:51,841 INFO L85 PathProgramCache]: Analyzing trace with hash -385233554, now seen corresponding path program 2 times [2023-11-29 00:27:51,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:51,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559684838] [2023-11-29 00:27:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:51,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:51,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:51,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038884849] [2023-11-29 00:27:51,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:27:51,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:51,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:51,849 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:51,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:27:51,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:27:51,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:51,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:27:51,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:27:51,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:27:52,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:52,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559684838] [2023-11-29 00:27:52,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:52,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038884849] [2023-11-29 00:27:52,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038884849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:52,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:52,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 00:27:52,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93235522] [2023-11-29 00:27:52,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:52,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:27:52,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:52,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:27:52,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:27:52,172 INFO L87 Difference]: Start difference. First operand 304 states and 349 transitions. Second operand has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 00:27:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:52,646 INFO L93 Difference]: Finished difference Result 681 states and 768 transitions. [2023-11-29 00:27:52,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 00:27:52,646 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 77 [2023-11-29 00:27:52,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:52,661 INFO L225 Difference]: With dead ends: 681 [2023-11-29 00:27:52,662 INFO L226 Difference]: Without dead ends: 680 [2023-11-29 00:27:52,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:27:52,663 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 155 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:52,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 112 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:27:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2023-11-29 00:27:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 583. [2023-11-29 00:27:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 542 states have (on average 1.088560885608856) internal successors, (590), 546 states have internal predecessors, (590), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-29 00:27:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 658 transitions. [2023-11-29 00:27:52,702 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 658 transitions. Word has length 77 [2023-11-29 00:27:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:52,703 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 658 transitions. [2023-11-29 00:27:52,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.142857142857142) internal successors, (114), 15 states have internal predecessors, (114), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 00:27:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 658 transitions. [2023-11-29 00:27:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 00:27:52,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:52,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:52,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 00:27:52,905 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:52,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1602868179, now seen corresponding path program 1 times [2023-11-29 00:27:52,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:52,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909153509] [2023-11-29 00:27:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:52,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:52,912 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338930046] [2023-11-29 00:27:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:52,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:52,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:52,913 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:52,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 00:27:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:52,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:27:52,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:27:53,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 00:27:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909153509] [2023-11-29 00:27:53,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338930046] [2023-11-29 00:27:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338930046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:53,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:53,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 00:27:53,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709655094] [2023-11-29 00:27:53,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:53,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:27:53,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:27:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:53,144 INFO L87 Difference]: Start difference. First operand 583 states and 658 transitions. Second operand has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 00:27:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:53,649 INFO L93 Difference]: Finished difference Result 1177 states and 1372 transitions. [2023-11-29 00:27:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:27:53,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 90 [2023-11-29 00:27:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:53,658 INFO L225 Difference]: With dead ends: 1177 [2023-11-29 00:27:53,658 INFO L226 Difference]: Without dead ends: 1176 [2023-11-29 00:27:53,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:53,659 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 157 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:53,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 173 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:27:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-11-29 00:27:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1137. [2023-11-29 00:27:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1061 states have (on average 1.1413760603204524) internal successors, (1211), 1065 states have internal predecessors, (1211), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-29 00:27:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1349 transitions. [2023-11-29 00:27:53,757 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1349 transitions. Word has length 90 [2023-11-29 00:27:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:53,757 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 1349 transitions. [2023-11-29 00:27:53,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 10 states have internal predecessors, (125), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 00:27:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1349 transitions. [2023-11-29 00:27:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 00:27:53,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:53,758 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:53,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:53,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:27:53,959 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:53,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash -206256443, now seen corresponding path program 2 times [2023-11-29 00:27:53,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:53,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971942678] [2023-11-29 00:27:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:53,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:53,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026900555] [2023-11-29 00:27:53,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:27:53,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:53,971 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:53,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 00:27:54,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:27:54,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:54,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:27:54,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 00:27:54,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971942678] [2023-11-29 00:27:54,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026900555] [2023-11-29 00:27:54,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026900555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:54,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 00:27:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552834937] [2023-11-29 00:27:54,387 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:54,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:27:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:27:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:27:54,388 INFO L87 Difference]: Start difference. First operand 1137 states and 1349 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:27:54,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:54,624 INFO L93 Difference]: Finished difference Result 1267 states and 1502 transitions. [2023-11-29 00:27:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:27:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 95 [2023-11-29 00:27:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:54,632 INFO L225 Difference]: With dead ends: 1267 [2023-11-29 00:27:54,632 INFO L226 Difference]: Without dead ends: 1263 [2023-11-29 00:27:54,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:54,633 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:54,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 162 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-11-29 00:27:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1257. [2023-11-29 00:27:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1174 states have (on average 1.1337308347529813) internal successors, (1331), 1178 states have internal predecessors, (1331), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-11-29 00:27:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1483 transitions. [2023-11-29 00:27:54,747 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1483 transitions. Word has length 95 [2023-11-29 00:27:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:54,747 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1483 transitions. [2023-11-29 00:27:54,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:27:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1483 transitions. [2023-11-29 00:27:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 00:27:54,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:54,749 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:54,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 00:27:54,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:27:54,950 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:54,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash -940589179, now seen corresponding path program 2 times [2023-11-29 00:27:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:54,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146767386] [2023-11-29 00:27:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:54,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:54,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615059617] [2023-11-29 00:27:54,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:27:54,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:54,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:54,961 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:54,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 00:27:55,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:27:55,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:55,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:27:55,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 00:27:55,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 00:27:55,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:55,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146767386] [2023-11-29 00:27:55,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:55,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615059617] [2023-11-29 00:27:55,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615059617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:27:55,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:27:55,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 00:27:55,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107049316] [2023-11-29 00:27:55,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:55,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:27:55,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:55,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:27:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:27:55,249 INFO L87 Difference]: Start difference. First operand 1257 states and 1483 transitions. Second operand has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:27:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:55,529 INFO L93 Difference]: Finished difference Result 2490 states and 3022 transitions. [2023-11-29 00:27:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:27:55,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 107 [2023-11-29 00:27:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:55,541 INFO L225 Difference]: With dead ends: 2490 [2023-11-29 00:27:55,541 INFO L226 Difference]: Without dead ends: 2489 [2023-11-29 00:27:55,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:27:55,543 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 185 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:55,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 181 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2023-11-29 00:27:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2286. [2023-11-29 00:27:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2138 states have (on average 1.1693171188026192) internal successors, (2500), 2142 states have internal predecessors, (2500), 141 states have call successors, (141), 2 states have call predecessors, (141), 2 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2023-11-29 00:27:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 2782 transitions. [2023-11-29 00:27:55,750 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 2782 transitions. Word has length 107 [2023-11-29 00:27:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:55,750 INFO L495 AbstractCegarLoop]: Abstraction has 2286 states and 2782 transitions. [2023-11-29 00:27:55,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.545454545454545) internal successors, (149), 12 states have internal predecessors, (149), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:27:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 2782 transitions. [2023-11-29 00:27:55,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:27:55,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:55,753 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:55,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 00:27:55,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:27:55,953 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:55,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:55,954 INFO L85 PathProgramCache]: Analyzing trace with hash -321833708, now seen corresponding path program 3 times [2023-11-29 00:27:55,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:55,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475060870] [2023-11-29 00:27:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:55,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:55,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:55,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445811982] [2023-11-29 00:27:55,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:27:55,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:55,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:55,963 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:55,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 00:27:56,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 00:27:56,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:56,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:27:56,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 00:27:56,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:56,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:56,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475060870] [2023-11-29 00:27:56,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445811982] [2023-11-29 00:27:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445811982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:56,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:56,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 00:27:56,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967207395] [2023-11-29 00:27:56,309 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:27:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:56,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:27:56,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:56,310 INFO L87 Difference]: Start difference. First operand 2286 states and 2782 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:27:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:56,586 INFO L93 Difference]: Finished difference Result 3666 states and 4543 transitions. [2023-11-29 00:27:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:27:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 115 [2023-11-29 00:27:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:56,595 INFO L225 Difference]: With dead ends: 3666 [2023-11-29 00:27:56,595 INFO L226 Difference]: Without dead ends: 2258 [2023-11-29 00:27:56,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:27:56,598 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 61 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:56,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 184 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:27:56,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2023-11-29 00:27:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2118. [2023-11-29 00:27:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1980 states have (on average 1.1737373737373737) internal successors, (2324), 1984 states have internal predecessors, (2324), 131 states have call successors, (131), 2 states have call predecessors, (131), 2 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-29 00:27:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2586 transitions. [2023-11-29 00:27:56,800 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2586 transitions. Word has length 115 [2023-11-29 00:27:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:56,801 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 2586 transitions. [2023-11-29 00:27:56,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 00:27:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2586 transitions. [2023-11-29 00:27:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 00:27:56,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:56,805 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:56,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 00:27:57,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:27:57,010 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:57,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash -897409821, now seen corresponding path program 4 times [2023-11-29 00:27:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:57,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789281340] [2023-11-29 00:27:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:57,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:57,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1262637319] [2023-11-29 00:27:57,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:27:57,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:57,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:57,024 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:57,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 00:27:57,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:27:57,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:57,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 00:27:57,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 9 proven. 220 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 00:27:57,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789281340] [2023-11-29 00:27:58,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262637319] [2023-11-29 00:27:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262637319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:58,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:58,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 00:27:58,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313315526] [2023-11-29 00:27:58,057 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:27:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:27:58,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:27:58,059 INFO L87 Difference]: Start difference. First operand 2118 states and 2586 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:27:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:58,795 INFO L93 Difference]: Finished difference Result 2573 states and 3139 transitions. [2023-11-29 00:27:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:27:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 135 [2023-11-29 00:27:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:58,806 INFO L225 Difference]: With dead ends: 2573 [2023-11-29 00:27:58,806 INFO L226 Difference]: Without dead ends: 2569 [2023-11-29 00:27:58,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:27:58,807 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:58,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 211 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:27:58,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2023-11-29 00:27:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2236. [2023-11-29 00:27:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2090 states have (on average 1.1717703349282296) internal successors, (2449), 2094 states have internal predecessors, (2449), 139 states have call successors, (139), 2 states have call predecessors, (139), 2 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2023-11-29 00:27:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2727 transitions. [2023-11-29 00:27:58,967 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 2727 transitions. Word has length 135 [2023-11-29 00:27:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:58,968 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 2727 transitions. [2023-11-29 00:27:58,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 6 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:27:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 2727 transitions. [2023-11-29 00:27:58,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 00:27:58,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:58,971 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:58,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 00:27:59,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:27:59,172 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:27:59,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash -62504019, now seen corresponding path program 5 times [2023-11-29 00:27:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:59,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15693602] [2023-11-29 00:27:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:59,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:59,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:59,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549358803] [2023-11-29 00:27:59,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:27:59,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:59,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:59,181 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:59,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 00:27:59,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-29 00:27:59,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:59,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:27:59,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 12 proven. 198 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 00:27:59,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:59,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15693602] [2023-11-29 00:27:59,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:59,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549358803] [2023-11-29 00:27:59,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549358803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:59,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:59,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 00:27:59,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601733891] [2023-11-29 00:27:59,689 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:27:59,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:27:59,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:27:59,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:27:59,691 INFO L87 Difference]: Start difference. First operand 2236 states and 2727 transitions. Second operand has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:28:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:00,070 INFO L93 Difference]: Finished difference Result 2555 states and 3118 transitions. [2023-11-29 00:28:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:28:00,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 135 [2023-11-29 00:28:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:00,080 INFO L225 Difference]: With dead ends: 2555 [2023-11-29 00:28:00,080 INFO L226 Difference]: Without dead ends: 2551 [2023-11-29 00:28:00,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:28:00,081 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 31 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:00,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 288 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:28:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2023-11-29 00:28:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2545. [2023-11-29 00:28:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2379 states have (on average 1.1664564943253468) internal successors, (2775), 2383 states have internal predecessors, (2775), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-29 00:28:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3093 transitions. [2023-11-29 00:28:00,220 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3093 transitions. Word has length 135 [2023-11-29 00:28:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:00,220 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3093 transitions. [2023-11-29 00:28:00,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:28:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3093 transitions. [2023-11-29 00:28:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 00:28:00,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:00,222 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:00,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 00:28:00,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:28:00,423 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:00,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1350152142, now seen corresponding path program 6 times [2023-11-29 00:28:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975593570] [2023-11-29 00:28:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:00,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:00,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980525314] [2023-11-29 00:28:00,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:28:00,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:00,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:00,433 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:00,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 00:28:00,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-11-29 00:28:00,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:00,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:28:00,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 109 proven. 208 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 00:28:00,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 109 proven. 208 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 00:28:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:00,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975593570] [2023-11-29 00:28:00,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:00,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980525314] [2023-11-29 00:28:00,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980525314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:00,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:00,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2023-11-29 00:28:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225406976] [2023-11-29 00:28:00,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:00,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:28:00,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:28:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:28:00,939 INFO L87 Difference]: Start difference. First operand 2545 states and 3093 transitions. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:28:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:01,727 INFO L93 Difference]: Finished difference Result 5407 states and 6700 transitions. [2023-11-29 00:28:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:28:01,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 155 [2023-11-29 00:28:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:01,748 INFO L225 Difference]: With dead ends: 5407 [2023-11-29 00:28:01,748 INFO L226 Difference]: Without dead ends: 3994 [2023-11-29 00:28:01,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 292 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:28:01,752 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 91 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:01,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 419 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:28:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-11-29 00:28:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 2931. [2023-11-29 00:28:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2741 states have (on average 1.1597956950018242) internal successors, (3179), 2745 states have internal predecessors, (3179), 183 states have call successors, (183), 2 states have call predecessors, (183), 2 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-29 00:28:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3545 transitions. [2023-11-29 00:28:02,032 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3545 transitions. Word has length 155 [2023-11-29 00:28:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:02,033 INFO L495 AbstractCegarLoop]: Abstraction has 2931 states and 3545 transitions. [2023-11-29 00:28:02,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:28:02,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3545 transitions. [2023-11-29 00:28:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 00:28:02,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:02,036 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:02,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 00:28:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 00:28:02,240 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:02,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash -515246340, now seen corresponding path program 7 times [2023-11-29 00:28:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021683942] [2023-11-29 00:28:02,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:02,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567680860] [2023-11-29 00:28:02,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:28:02,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:02,252 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:02,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 00:28:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:02,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:28:02,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 235 proven. 92 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 00:28:02,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 195 proven. 92 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-29 00:28:02,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:02,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021683942] [2023-11-29 00:28:02,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:02,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567680860] [2023-11-29 00:28:02,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567680860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:02,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:02,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-11-29 00:28:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662432621] [2023-11-29 00:28:02,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:02,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:28:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:28:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:28:02,566 INFO L87 Difference]: Start difference. First operand 2931 states and 3545 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-29 00:28:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:03,241 INFO L93 Difference]: Finished difference Result 5506 states and 6795 transitions. [2023-11-29 00:28:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:28:03,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 155 [2023-11-29 00:28:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:03,257 INFO L225 Difference]: With dead ends: 5506 [2023-11-29 00:28:03,257 INFO L226 Difference]: Without dead ends: 3978 [2023-11-29 00:28:03,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 296 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:28:03,260 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 78 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:03,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 272 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:28:03,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2023-11-29 00:28:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 3100. [2023-11-29 00:28:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2899 states have (on average 1.1576405657123146) internal successors, (3356), 2903 states have internal predecessors, (3356), 194 states have call successors, (194), 2 states have call predecessors, (194), 2 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2023-11-29 00:28:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3744 transitions. [2023-11-29 00:28:03,456 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3744 transitions. Word has length 155 [2023-11-29 00:28:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:03,456 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 3744 transitions. [2023-11-29 00:28:03,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2023-11-29 00:28:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3744 transitions. [2023-11-29 00:28:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 00:28:03,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:03,459 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:03,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:03,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 00:28:03,660 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:03,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1886262102, now seen corresponding path program 3 times [2023-11-29 00:28:03,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:03,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060152306] [2023-11-29 00:28:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:03,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:03,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058283809] [2023-11-29 00:28:03,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:28:03,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:03,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:03,670 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:03,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 00:28:03,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 00:28:03,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:03,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:28:03,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 18 proven. 347 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 00:28:03,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 18 proven. 347 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-29 00:28:04,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060152306] [2023-11-29 00:28:04,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:04,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058283809] [2023-11-29 00:28:04,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058283809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:04,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-29 00:28:04,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815290246] [2023-11-29 00:28:04,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:04,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:28:04,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:04,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:28:04,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:28:04,252 INFO L87 Difference]: Start difference. First operand 3100 states and 3744 transitions. Second operand has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:28:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:05,649 INFO L93 Difference]: Finished difference Result 6751 states and 7989 transitions. [2023-11-29 00:28:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 00:28:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 157 [2023-11-29 00:28:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:05,672 INFO L225 Difference]: With dead ends: 6751 [2023-11-29 00:28:05,672 INFO L226 Difference]: Without dead ends: 6750 [2023-11-29 00:28:05,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1051, Invalid=2371, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 00:28:05,674 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 357 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:05,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 161 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:28:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6750 states. [2023-11-29 00:28:06,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6750 to 6554. [2023-11-29 00:28:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 6166 states have (on average 1.1070385987674343) internal successors, (6826), 6170 states have internal predecessors, (6826), 381 states have call successors, (381), 2 states have call predecessors, (381), 2 states have return successors, (381), 381 states have call predecessors, (381), 381 states have call successors, (381) [2023-11-29 00:28:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 7588 transitions. [2023-11-29 00:28:06,096 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 7588 transitions. Word has length 157 [2023-11-29 00:28:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:06,096 INFO L495 AbstractCegarLoop]: Abstraction has 6554 states and 7588 transitions. [2023-11-29 00:28:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 10.636363636363637) internal successors, (234), 23 states have internal predecessors, (234), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:28:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 7588 transitions. [2023-11-29 00:28:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 00:28:06,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:06,100 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:06,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 00:28:06,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:06,300 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:06,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1131873023, now seen corresponding path program 8 times [2023-11-29 00:28:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:06,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190760709] [2023-11-29 00:28:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:06,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:06,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:06,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260487152] [2023-11-29 00:28:06,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:28:06,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:06,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:06,312 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:06,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 00:28:06,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:28:06,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:06,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:28:06,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-29 00:28:06,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:06,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:06,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190760709] [2023-11-29 00:28:06,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:06,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260487152] [2023-11-29 00:28:06,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260487152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:06,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:28:06,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 00:28:06,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609243201] [2023-11-29 00:28:06,929 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:06,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:28:06,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:28:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:28:06,930 INFO L87 Difference]: Start difference. First operand 6554 states and 7588 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:28:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:07,699 INFO L93 Difference]: Finished difference Result 7044 states and 8174 transitions. [2023-11-29 00:28:07,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:28:07,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 175 [2023-11-29 00:28:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:07,714 INFO L225 Difference]: With dead ends: 7044 [2023-11-29 00:28:07,714 INFO L226 Difference]: Without dead ends: 7040 [2023-11-29 00:28:07,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:28:07,716 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 32 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:07,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 283 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:28:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2023-11-29 00:28:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 6439. [2023-11-29 00:28:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6439 states, 6057 states have (on average 1.106323262341093) internal successors, (6701), 6061 states have internal predecessors, (6701), 375 states have call successors, (375), 2 states have call predecessors, (375), 2 states have return successors, (375), 375 states have call predecessors, (375), 375 states have call successors, (375) [2023-11-29 00:28:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6439 states to 6439 states and 7451 transitions. [2023-11-29 00:28:08,153 INFO L78 Accepts]: Start accepts. Automaton has 6439 states and 7451 transitions. Word has length 175 [2023-11-29 00:28:08,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:08,154 INFO L495 AbstractCegarLoop]: Abstraction has 6439 states and 7451 transitions. [2023-11-29 00:28:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:28:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6439 states and 7451 transitions. [2023-11-29 00:28:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 00:28:08,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:08,157 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:08,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 00:28:08,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:08,357 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:08,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1708308629, now seen corresponding path program 9 times [2023-11-29 00:28:08,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:08,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908888745] [2023-11-29 00:28:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:08,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:08,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907905975] [2023-11-29 00:28:08,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:28:08,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:08,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:08,371 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:08,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 00:28:08,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 00:28:08,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:08,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:28:08,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 00:28:08,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 372 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-29 00:28:09,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908888745] [2023-11-29 00:28:09,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907905975] [2023-11-29 00:28:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907905975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:09,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:09,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 00:28:09,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390257181] [2023-11-29 00:28:09,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:09,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:28:09,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:28:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:28:09,064 INFO L87 Difference]: Start difference. First operand 6439 states and 7451 transitions. Second operand has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:28:11,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:11,449 INFO L93 Difference]: Finished difference Result 7351 states and 8558 transitions. [2023-11-29 00:28:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 00:28:11,449 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 175 [2023-11-29 00:28:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:11,463 INFO L225 Difference]: With dead ends: 7351 [2023-11-29 00:28:11,463 INFO L226 Difference]: Without dead ends: 7316 [2023-11-29 00:28:11,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 00:28:11,467 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 550 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:11,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 476 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:28:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2023-11-29 00:28:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5958. [2023-11-29 00:28:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5958 states, 5608 states have (on average 1.0608059914407988) internal successors, (5949), 5611 states have internal predecessors, (5949), 344 states have call successors, (344), 2 states have call predecessors, (344), 2 states have return successors, (344), 344 states have call predecessors, (344), 344 states have call successors, (344) [2023-11-29 00:28:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 6637 transitions. [2023-11-29 00:28:11,944 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 6637 transitions. Word has length 175 [2023-11-29 00:28:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:11,945 INFO L495 AbstractCegarLoop]: Abstraction has 5958 states and 6637 transitions. [2023-11-29 00:28:11,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 13.0) internal successors, (195), 16 states have internal predecessors, (195), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:28:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 6637 transitions. [2023-11-29 00:28:11,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 00:28:11,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:11,950 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:11,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 00:28:12,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:12,150 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:12,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1824792118, now seen corresponding path program 2 times [2023-11-29 00:28:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:12,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832822913] [2023-11-29 00:28:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:12,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494936004] [2023-11-29 00:28:12,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:28:12,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:12,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:12,163 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:12,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 00:28:12,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:28:12,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:12,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:28:12,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 00:28:12,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 00:28:12,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:12,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832822913] [2023-11-29 00:28:12,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:12,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494936004] [2023-11-29 00:28:12,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494936004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:12,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:12,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 00:28:12,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832023963] [2023-11-29 00:28:12,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:12,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:28:12,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:12,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:28:12,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:28:12,631 INFO L87 Difference]: Start difference. First operand 5958 states and 6637 transitions. Second operand has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-29 00:28:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:13,905 INFO L93 Difference]: Finished difference Result 8683 states and 9773 transitions. [2023-11-29 00:28:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:28:13,906 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 190 [2023-11-29 00:28:13,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:13,918 INFO L225 Difference]: With dead ends: 8683 [2023-11-29 00:28:13,918 INFO L226 Difference]: Without dead ends: 8682 [2023-11-29 00:28:13,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:28:13,920 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 347 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:13,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 306 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:28:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2023-11-29 00:28:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 8631. [2023-11-29 00:28:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8631 states, 8113 states have (on average 1.073462344385554) internal successors, (8709), 8116 states have internal predecessors, (8709), 512 states have call successors, (512), 2 states have call predecessors, (512), 2 states have return successors, (512), 512 states have call predecessors, (512), 512 states have call successors, (512) [2023-11-29 00:28:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8631 states to 8631 states and 9733 transitions. [2023-11-29 00:28:14,490 INFO L78 Accepts]: Start accepts. Automaton has 8631 states and 9733 transitions. Word has length 190 [2023-11-29 00:28:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:14,490 INFO L495 AbstractCegarLoop]: Abstraction has 8631 states and 9733 transitions. [2023-11-29 00:28:14,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 14.473684210526315) internal successors, (275), 20 states have internal predecessors, (275), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-29 00:28:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8631 states and 9733 transitions. [2023-11-29 00:28:14,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 00:28:14,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:14,493 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:14,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 00:28:14,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:14,694 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:14,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2046102192, now seen corresponding path program 10 times [2023-11-29 00:28:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796250899] [2023-11-29 00:28:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:14,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:14,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809515156] [2023-11-29 00:28:14,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:28:14,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:14,705 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:14,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 00:28:14,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:28:14,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:14,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:28:14,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 175 proven. 372 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 00:28:15,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 175 proven. 372 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-29 00:28:15,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796250899] [2023-11-29 00:28:15,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809515156] [2023-11-29 00:28:15,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809515156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:15,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:15,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2023-11-29 00:28:15,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087083347] [2023-11-29 00:28:15,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:15,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:28:15,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:28:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:28:15,318 INFO L87 Difference]: Start difference. First operand 8631 states and 9733 transitions. Second operand has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-29 00:28:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:16,499 INFO L93 Difference]: Finished difference Result 15364 states and 17529 transitions. [2023-11-29 00:28:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:28:16,499 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 195 [2023-11-29 00:28:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:16,515 INFO L225 Difference]: With dead ends: 15364 [2023-11-29 00:28:16,515 INFO L226 Difference]: Without dead ends: 12014 [2023-11-29 00:28:16,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 368 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:28:16,521 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 59 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:16,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 508 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:28:16,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12014 states. [2023-11-29 00:28:17,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12014 to 9969. [2023-11-29 00:28:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9367 states have (on average 1.0692857905412618) internal successors, (10016), 9370 states have internal predecessors, (10016), 596 states have call successors, (596), 2 states have call predecessors, (596), 2 states have return successors, (596), 596 states have call predecessors, (596), 596 states have call successors, (596) [2023-11-29 00:28:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 11208 transitions. [2023-11-29 00:28:17,285 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 11208 transitions. Word has length 195 [2023-11-29 00:28:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:17,286 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 11208 transitions. [2023-11-29 00:28:17,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-29 00:28:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 11208 transitions. [2023-11-29 00:28:17,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-29 00:28:17,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:17,288 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:17,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 00:28:17,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:17,489 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:17,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:17,489 INFO L85 PathProgramCache]: Analyzing trace with hash -40826342, now seen corresponding path program 11 times [2023-11-29 00:28:17,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:17,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58002862] [2023-11-29 00:28:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:17,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:17,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838314376] [2023-11-29 00:28:17,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:28:17,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:17,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:17,499 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:17,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 00:28:17,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-29 00:28:17,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:17,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:28:17,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-29 00:28:17,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58002862] [2023-11-29 00:28:17,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838314376] [2023-11-29 00:28:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838314376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:17,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:28:17,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-29 00:28:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676729984] [2023-11-29 00:28:17,971 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:17,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:28:17,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:17,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:28:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:28:17,973 INFO L87 Difference]: Start difference. First operand 9969 states and 11208 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:28:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:18,844 INFO L93 Difference]: Finished difference Result 14658 states and 16585 transitions. [2023-11-29 00:28:18,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:28:18,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 195 [2023-11-29 00:28:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:18,857 INFO L225 Difference]: With dead ends: 14658 [2023-11-29 00:28:18,857 INFO L226 Difference]: Without dead ends: 9942 [2023-11-29 00:28:18,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:28:18,863 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 80 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:18,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 270 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:28:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9942 states. [2023-11-29 00:28:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9942 to 9608. [2023-11-29 00:28:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9608 states, 9026 states have (on average 1.0701307334367383) internal successors, (9659), 9029 states have internal predecessors, (9659), 576 states have call successors, (576), 2 states have call predecessors, (576), 2 states have return successors, (576), 576 states have call predecessors, (576), 576 states have call successors, (576) [2023-11-29 00:28:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9608 states to 9608 states and 10811 transitions. [2023-11-29 00:28:19,496 INFO L78 Accepts]: Start accepts. Automaton has 9608 states and 10811 transitions. Word has length 195 [2023-11-29 00:28:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:19,496 INFO L495 AbstractCegarLoop]: Abstraction has 9608 states and 10811 transitions. [2023-11-29 00:28:19,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 9 states have internal predecessors, (96), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 00:28:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9608 states and 10811 transitions. [2023-11-29 00:28:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-29 00:28:19,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:19,499 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:19,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 00:28:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:19,699 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:19,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 959833887, now seen corresponding path program 12 times [2023-11-29 00:28:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569275969] [2023-11-29 00:28:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:19,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:19,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825075575] [2023-11-29 00:28:19,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:28:19,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:19,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:19,713 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:19,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 00:28:20,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-11-29 00:28:20,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:20,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:28:20,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-29 00:28:20,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569275969] [2023-11-29 00:28:20,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825075575] [2023-11-29 00:28:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825075575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:20,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:28:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-29 00:28:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003238786] [2023-11-29 00:28:20,710 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:20,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:28:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:28:20,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:28:20,711 INFO L87 Difference]: Start difference. First operand 9608 states and 10811 transitions. Second operand has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 00:28:21,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:21,836 INFO L93 Difference]: Finished difference Result 10001 states and 11246 transitions. [2023-11-29 00:28:21,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:28:21,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 215 [2023-11-29 00:28:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:21,855 INFO L225 Difference]: With dead ends: 10001 [2023-11-29 00:28:21,855 INFO L226 Difference]: Without dead ends: 10000 [2023-11-29 00:28:21,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:28:21,860 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 31 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:21,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 348 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:28:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2023-11-29 00:28:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 9607. [2023-11-29 00:28:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9607 states, 9024 states have (on average 1.0700354609929077) internal successors, (9656), 9027 states have internal predecessors, (9656), 577 states have call successors, (577), 2 states have call predecessors, (577), 2 states have return successors, (577), 577 states have call predecessors, (577), 577 states have call successors, (577) [2023-11-29 00:28:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9607 states to 9607 states and 10810 transitions. [2023-11-29 00:28:22,491 INFO L78 Accepts]: Start accepts. Automaton has 9607 states and 10810 transitions. Word has length 215 [2023-11-29 00:28:22,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:22,492 INFO L495 AbstractCegarLoop]: Abstraction has 9607 states and 10810 transitions. [2023-11-29 00:28:22,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.777777777777779) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-29 00:28:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9607 states and 10810 transitions. [2023-11-29 00:28:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-29 00:28:22,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:22,495 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:22,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 00:28:22,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:28:22,696 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:22,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash -650607649, now seen corresponding path program 3 times [2023-11-29 00:28:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:22,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719692302] [2023-11-29 00:28:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:22,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:22,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484802216] [2023-11-29 00:28:22,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:28:22,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:22,706 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:22,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 00:28:22,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 00:28:22,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:22,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:28:22,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 830 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 00:28:23,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 830 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 00:28:23,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719692302] [2023-11-29 00:28:23,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484802216] [2023-11-29 00:28:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484802216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:23,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:23,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-29 00:28:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463845783] [2023-11-29 00:28:23,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:23,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:28:23,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:28:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:28:23,406 INFO L87 Difference]: Start difference. First operand 9607 states and 10810 transitions. Second operand has 24 states, 23 states have (on average 14.304347826086957) internal successors, (329), 24 states have internal predecessors, (329), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 00:28:24,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:24,597 INFO L93 Difference]: Finished difference Result 14791 states and 17050 transitions. [2023-11-29 00:28:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:28:24,598 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 14.304347826086957) internal successors, (329), 24 states have internal predecessors, (329), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 227 [2023-11-29 00:28:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:24,615 INFO L225 Difference]: With dead ends: 14791 [2023-11-29 00:28:24,615 INFO L226 Difference]: Without dead ends: 14790 [2023-11-29 00:28:24,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:28:24,618 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 203 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:24,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 267 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:28:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14790 states. [2023-11-29 00:28:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14790 to 13974. [2023-11-29 00:28:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13974 states, 13118 states have (on average 1.0888092697057479) internal successors, (14283), 13121 states have internal predecessors, (14283), 850 states have call successors, (850), 2 states have call predecessors, (850), 2 states have return successors, (850), 850 states have call predecessors, (850), 850 states have call successors, (850) [2023-11-29 00:28:25,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13974 states to 13974 states and 15983 transitions. [2023-11-29 00:28:25,695 INFO L78 Accepts]: Start accepts. Automaton has 13974 states and 15983 transitions. Word has length 227 [2023-11-29 00:28:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:25,696 INFO L495 AbstractCegarLoop]: Abstraction has 13974 states and 15983 transitions. [2023-11-29 00:28:25,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 14.304347826086957) internal successors, (329), 24 states have internal predecessors, (329), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 00:28:25,696 INFO L276 IsEmpty]: Start isEmpty. Operand 13974 states and 15983 transitions. [2023-11-29 00:28:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 00:28:25,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:25,699 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:25,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 00:28:25,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:25,900 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:25,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1020077166, now seen corresponding path program 13 times [2023-11-29 00:28:25,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:25,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531273049] [2023-11-29 00:28:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:25,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:25,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:25,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136939490] [2023-11-29 00:28:25,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:28:25,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:25,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:25,913 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:25,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 00:28:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:26,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:28:26,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 257 proven. 584 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 00:28:26,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 257 proven. 584 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 00:28:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531273049] [2023-11-29 00:28:26,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136939490] [2023-11-29 00:28:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136939490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:26,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:26,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 19 [2023-11-29 00:28:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149821489] [2023-11-29 00:28:26,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:26,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:28:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:28:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:28:26,598 INFO L87 Difference]: Start difference. First operand 13974 states and 15983 transitions. Second operand has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 19 states have internal predecessors, (250), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:28:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:28,373 INFO L93 Difference]: Finished difference Result 27084 states and 31355 transitions. [2023-11-29 00:28:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:28:28,373 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 19 states have internal predecessors, (250), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 235 [2023-11-29 00:28:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:28,391 INFO L225 Difference]: With dead ends: 27084 [2023-11-29 00:28:28,391 INFO L226 Difference]: Without dead ends: 20705 [2023-11-29 00:28:28,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 444 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:28:28,400 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 77 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:28,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 457 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:28:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20705 states. [2023-11-29 00:28:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20705 to 15523. [2023-11-29 00:28:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15523 states, 14572 states have (on average 1.0853692012077958) internal successors, (15816), 14575 states have internal predecessors, (15816), 945 states have call successors, (945), 2 states have call predecessors, (945), 2 states have return successors, (945), 945 states have call predecessors, (945), 945 states have call successors, (945) [2023-11-29 00:28:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15523 states to 15523 states and 17706 transitions. [2023-11-29 00:28:29,435 INFO L78 Accepts]: Start accepts. Automaton has 15523 states and 17706 transitions. Word has length 235 [2023-11-29 00:28:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:29,436 INFO L495 AbstractCegarLoop]: Abstraction has 15523 states and 17706 transitions. [2023-11-29 00:28:29,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.157894736842104) internal successors, (250), 19 states have internal predecessors, (250), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:28:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15523 states and 17706 transitions. [2023-11-29 00:28:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-29 00:28:29,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:29,439 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:29,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 00:28:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:29,640 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:29,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash 529733634, now seen corresponding path program 14 times [2023-11-29 00:28:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081045060] [2023-11-29 00:28:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:29,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:29,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050394479] [2023-11-29 00:28:29,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:28:29,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:29,651 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:29,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 00:28:29,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:28:29,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:29,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:28:29,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 465 proven. 252 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-29 00:28:29,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 189 proven. 528 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-29 00:28:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081045060] [2023-11-29 00:28:30,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050394479] [2023-11-29 00:28:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050394479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:30,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:30,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-29 00:28:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044985046] [2023-11-29 00:28:30,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:30,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:28:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:28:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:28:30,219 INFO L87 Difference]: Start difference. First operand 15523 states and 17706 transitions. Second operand has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:28:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:32,798 INFO L93 Difference]: Finished difference Result 40276 states and 46841 transitions. [2023-11-29 00:28:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 00:28:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 235 [2023-11-29 00:28:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:32,829 INFO L225 Difference]: With dead ends: 40276 [2023-11-29 00:28:32,830 INFO L226 Difference]: Without dead ends: 28992 [2023-11-29 00:28:32,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=386, Invalid=1020, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 00:28:32,844 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 134 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:32,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 342 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:28:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28992 states. [2023-11-29 00:28:33,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28992 to 13137. [2023-11-29 00:28:33,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13137 states, 12319 states have (on average 1.089211786670996) internal successors, (13418), 12322 states have internal predecessors, (13418), 812 states have call successors, (812), 2 states have call predecessors, (812), 2 states have return successors, (812), 812 states have call predecessors, (812), 812 states have call successors, (812) [2023-11-29 00:28:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13137 states to 13137 states and 15042 transitions. [2023-11-29 00:28:34,003 INFO L78 Accepts]: Start accepts. Automaton has 13137 states and 15042 transitions. Word has length 235 [2023-11-29 00:28:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:34,003 INFO L495 AbstractCegarLoop]: Abstraction has 13137 states and 15042 transitions. [2023-11-29 00:28:34,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:28:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13137 states and 15042 transitions. [2023-11-29 00:28:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-29 00:28:34,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:34,007 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:34,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:34,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 00:28:34,208 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:34,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1980277955, now seen corresponding path program 15 times [2023-11-29 00:28:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511066109] [2023-11-29 00:28:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:34,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:34,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647395942] [2023-11-29 00:28:34,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:28:34,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:34,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:34,223 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:34,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 00:28:34,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 00:28:34,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:34,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:28:34,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-11-29 00:28:34,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2023-11-29 00:28:35,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:35,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511066109] [2023-11-29 00:28:35,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647395942] [2023-11-29 00:28:35,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647395942] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:35,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:35,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 00:28:35,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116122699] [2023-11-29 00:28:35,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:35,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:28:35,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:28:35,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:28:35,151 INFO L87 Difference]: Start difference. First operand 13137 states and 15042 transitions. Second operand has 20 states, 19 states have (on average 12.368421052631579) internal successors, (235), 20 states have internal predecessors, (235), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:28:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:39,303 INFO L93 Difference]: Finished difference Result 15052 states and 17201 transitions. [2023-11-29 00:28:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 00:28:39,304 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 12.368421052631579) internal successors, (235), 20 states have internal predecessors, (235), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 255 [2023-11-29 00:28:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:39,320 INFO L225 Difference]: With dead ends: 15052 [2023-11-29 00:28:39,320 INFO L226 Difference]: Without dead ends: 15050 [2023-11-29 00:28:39,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1348, Invalid=4504, Unknown=0, NotChecked=0, Total=5852 [2023-11-29 00:28:39,327 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 542 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:39,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 679 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:28:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15050 states. [2023-11-29 00:28:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15050 to 14307. [2023-11-29 00:28:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14307 states, 13416 states have (on average 1.0906380441264163) internal successors, (14632), 13419 states have internal predecessors, (14632), 885 states have call successors, (885), 2 states have call predecessors, (885), 2 states have return successors, (885), 885 states have call predecessors, (885), 885 states have call successors, (885) [2023-11-29 00:28:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 16402 transitions. [2023-11-29 00:28:40,694 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 16402 transitions. Word has length 255 [2023-11-29 00:28:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:40,694 INFO L495 AbstractCegarLoop]: Abstraction has 14307 states and 16402 transitions. [2023-11-29 00:28:40,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 12.368421052631579) internal successors, (235), 20 states have internal predecessors, (235), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:28:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 16402 transitions. [2023-11-29 00:28:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-29 00:28:40,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:40,701 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:40,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:40,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 00:28:40,901 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:40,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:40,902 INFO L85 PathProgramCache]: Analyzing trace with hash -483420408, now seen corresponding path program 16 times [2023-11-29 00:28:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252269716] [2023-11-29 00:28:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:40,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:40,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222535396] [2023-11-29 00:28:40,915 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:28:40,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:40,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:40,916 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:40,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 00:28:41,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:28:41,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:41,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:28:41,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-11-29 00:28:41,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252269716] [2023-11-29 00:28:41,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:41,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222535396] [2023-11-29 00:28:41,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222535396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:41,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:28:41,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 00:28:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571449267] [2023-11-29 00:28:41,478 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:28:41,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:28:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:28:41,480 INFO L87 Difference]: Start difference. First operand 14307 states and 16402 transitions. Second operand has 11 states, 10 states have (on average 13.6) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-29 00:28:43,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:43,802 INFO L93 Difference]: Finished difference Result 15969 states and 18235 transitions. [2023-11-29 00:28:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 00:28:43,803 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.6) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 315 [2023-11-29 00:28:43,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:43,820 INFO L225 Difference]: With dead ends: 15969 [2023-11-29 00:28:43,820 INFO L226 Difference]: Without dead ends: 15513 [2023-11-29 00:28:43,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 00:28:43,826 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 381 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:43,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 337 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:28:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2023-11-29 00:28:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 14266. [2023-11-29 00:28:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14266 states, 13377 states have (on average 1.0906032742767438) internal successors, (14589), 13380 states have internal predecessors, (14589), 883 states have call successors, (883), 2 states have call predecessors, (883), 2 states have return successors, (883), 883 states have call predecessors, (883), 883 states have call successors, (883) [2023-11-29 00:28:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14266 states to 14266 states and 16355 transitions. [2023-11-29 00:28:44,982 INFO L78 Accepts]: Start accepts. Automaton has 14266 states and 16355 transitions. Word has length 315 [2023-11-29 00:28:44,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:44,983 INFO L495 AbstractCegarLoop]: Abstraction has 14266 states and 16355 transitions. [2023-11-29 00:28:44,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.6) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-29 00:28:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 14266 states and 16355 transitions. [2023-11-29 00:28:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 00:28:44,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:44,989 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:44,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 00:28:45,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:45,190 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:45,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:45,190 INFO L85 PathProgramCache]: Analyzing trace with hash 127968034, now seen corresponding path program 4 times [2023-11-29 00:28:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258506525] [2023-11-29 00:28:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:45,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:45,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93620028] [2023-11-29 00:28:45,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:28:45,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:45,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:45,208 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:45,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 00:28:45,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:28:45,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:45,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 00:28:45,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 81 proven. 1726 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-29 00:28:45,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 81 proven. 1726 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-29 00:28:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258506525] [2023-11-29 00:28:46,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93620028] [2023-11-29 00:28:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93620028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:46,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:46,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2023-11-29 00:28:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821806022] [2023-11-29 00:28:46,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 00:28:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 00:28:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=476, Invalid=1330, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:28:46,748 INFO L87 Difference]: Start difference. First operand 14266 states and 16355 transitions. Second operand has 43 states, 42 states have (on average 11.285714285714286) internal successors, (474), 43 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 00:28:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:51,022 INFO L93 Difference]: Finished difference Result 16098 states and 18439 transitions. [2023-11-29 00:28:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-29 00:28:51,023 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 11.285714285714286) internal successors, (474), 43 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) Word has length 317 [2023-11-29 00:28:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:51,041 INFO L225 Difference]: With dead ends: 16098 [2023-11-29 00:28:51,041 INFO L226 Difference]: Without dead ends: 16097 [2023-11-29 00:28:51,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3956, Invalid=9154, Unknown=0, NotChecked=0, Total=13110 [2023-11-29 00:28:51,050 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 422 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:51,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 170 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:28:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16097 states. [2023-11-29 00:28:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16097 to 15305. [2023-11-29 00:28:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15305 states, 14351 states have (on average 1.0877987596683159) internal successors, (15611), 14354 states have internal predecessors, (15611), 948 states have call successors, (948), 2 states have call predecessors, (948), 2 states have return successors, (948), 948 states have call predecessors, (948), 948 states have call successors, (948) [2023-11-29 00:28:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15305 states to 15305 states and 17507 transitions. [2023-11-29 00:28:52,519 INFO L78 Accepts]: Start accepts. Automaton has 15305 states and 17507 transitions. Word has length 317 [2023-11-29 00:28:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:52,520 INFO L495 AbstractCegarLoop]: Abstraction has 15305 states and 17507 transitions. [2023-11-29 00:28:52,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 11.285714285714286) internal successors, (474), 43 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 00:28:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15305 states and 17507 transitions. [2023-11-29 00:28:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 00:28:52,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:52,525 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:52,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:52,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 00:28:52,726 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:52,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:52,727 INFO L85 PathProgramCache]: Analyzing trace with hash -281378708, now seen corresponding path program 5 times [2023-11-29 00:28:52,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:52,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128721566] [2023-11-29 00:28:52,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:52,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476326310] [2023-11-29 00:28:52,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:28:52,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:52,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:52,745 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:52,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 00:28:52,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-11-29 00:28:52,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:52,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:28:52,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 885 proven. 844 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2023-11-29 00:28:53,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 781 proven. 844 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-11-29 00:28:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128721566] [2023-11-29 00:28:53,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476326310] [2023-11-29 00:28:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476326310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:53,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2023-11-29 00:28:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785376755] [2023-11-29 00:28:53,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:53,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:28:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:28:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:28:53,672 INFO L87 Difference]: Start difference. First operand 15305 states and 17507 transitions. Second operand has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 22 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2023-11-29 00:28:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:56,790 INFO L93 Difference]: Finished difference Result 28999 states and 33499 transitions. [2023-11-29 00:28:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 00:28:56,790 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 22 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 317 [2023-11-29 00:28:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:56,816 INFO L225 Difference]: With dead ends: 28999 [2023-11-29 00:28:56,816 INFO L226 Difference]: Without dead ends: 21716 [2023-11-29 00:28:56,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 604 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 00:28:56,829 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 270 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 560 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:28:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21716 states. [2023-11-29 00:28:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21716 to 15850. [2023-11-29 00:28:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15850 states, 14861 states have (on average 1.083305295740529) internal successors, (16099), 14864 states have internal predecessors, (16099), 983 states have call successors, (983), 2 states have call predecessors, (983), 2 states have return successors, (983), 983 states have call predecessors, (983), 983 states have call successors, (983) [2023-11-29 00:28:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15850 states to 15850 states and 18065 transitions. [2023-11-29 00:28:58,257 INFO L78 Accepts]: Start accepts. Automaton has 15850 states and 18065 transitions. Word has length 317 [2023-11-29 00:28:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:58,257 INFO L495 AbstractCegarLoop]: Abstraction has 15850 states and 18065 transitions. [2023-11-29 00:28:58,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 22 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2023-11-29 00:28:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 15850 states and 18065 transitions. [2023-11-29 00:28:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 00:28:58,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:58,262 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:58,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-11-29 00:28:58,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 00:28:58,463 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:28:58,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:58,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1672830060, now seen corresponding path program 6 times [2023-11-29 00:28:58,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:58,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091425045] [2023-11-29 00:28:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:58,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:58,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184432305] [2023-11-29 00:28:58,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:28:58,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:58,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:58,481 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:58,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 00:28:58,587 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-29 00:28:58,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:28:58,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:28:58,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 565 proven. 940 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-29 00:28:58,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 123 proven. 1382 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-11-29 00:28:59,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:59,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091425045] [2023-11-29 00:28:59,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:59,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184432305] [2023-11-29 00:28:59,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184432305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:28:59,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:28:59,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-11-29 00:28:59,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96984665] [2023-11-29 00:28:59,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:28:59,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:28:59,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:59,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:28:59,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:28:59,265 INFO L87 Difference]: Start difference. First operand 15850 states and 18065 transitions. Second operand has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:29:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:01,689 INFO L93 Difference]: Finished difference Result 16319 states and 18553 transitions. [2023-11-29 00:29:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 00:29:01,690 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 317 [2023-11-29 00:29:01,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:01,705 INFO L225 Difference]: With dead ends: 16319 [2023-11-29 00:29:01,705 INFO L226 Difference]: Without dead ends: 15092 [2023-11-29 00:29:01,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:29:01,710 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 85 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:01,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1324 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:29:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2023-11-29 00:29:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 15069. [2023-11-29 00:29:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15069 states, 14126 states have (on average 1.0826136202746708) internal successors, (15293), 14129 states have internal predecessors, (15293), 937 states have call successors, (937), 2 states have call predecessors, (937), 2 states have return successors, (937), 937 states have call predecessors, (937), 937 states have call successors, (937) [2023-11-29 00:29:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15069 states to 15069 states and 17167 transitions. [2023-11-29 00:29:02,887 INFO L78 Accepts]: Start accepts. Automaton has 15069 states and 17167 transitions. Word has length 317 [2023-11-29 00:29:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:02,888 INFO L495 AbstractCegarLoop]: Abstraction has 15069 states and 17167 transitions. [2023-11-29 00:29:02,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.222222222222221) internal successors, (256), 18 states have internal predecessors, (256), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:29:02,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15069 states and 17167 transitions. [2023-11-29 00:29:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-11-29 00:29:02,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:02,892 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:02,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 00:29:03,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 00:29:03,092 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:29:03,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1387060662, now seen corresponding path program 7 times [2023-11-29 00:29:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672028487] [2023-11-29 00:29:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:03,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:29:03,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430274658] [2023-11-29 00:29:03,103 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:29:03,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:03,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:03,104 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:03,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 00:29:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:03,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:29:03,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 42 proven. 1611 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-29 00:29:03,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 42 proven. 1611 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-11-29 00:29:04,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:04,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672028487] [2023-11-29 00:29:04,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:29:04,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430274658] [2023-11-29 00:29:04,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430274658] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:04,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-11-29 00:29:04,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2569362] [2023-11-29 00:29:04,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:04,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 00:29:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 00:29:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=964, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 00:29:04,402 INFO L87 Difference]: Start difference. First operand 15069 states and 17167 transitions. Second operand has 39 states, 38 states have (on average 12.473684210526315) internal successors, (474), 39 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 00:29:09,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:09,539 INFO L93 Difference]: Finished difference Result 27499 states and 31002 transitions. [2023-11-29 00:29:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-11-29 00:29:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 12.473684210526315) internal successors, (474), 39 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) Word has length 317 [2023-11-29 00:29:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:09,572 INFO L225 Difference]: With dead ends: 27499 [2023-11-29 00:29:09,572 INFO L226 Difference]: Without dead ends: 27498 [2023-11-29 00:29:09,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4259, Invalid=8851, Unknown=0, NotChecked=0, Total=13110 [2023-11-29 00:29:09,582 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 531 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:09,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 201 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:29:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27498 states. [2023-11-29 00:29:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27498 to 26641. [2023-11-29 00:29:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26641 states, 25018 states have (on average 1.0551203133743705) internal successors, (26397), 25021 states have internal predecessors, (26397), 1617 states have call successors, (1617), 2 states have call predecessors, (1617), 2 states have return successors, (1617), 1617 states have call predecessors, (1617), 1617 states have call successors, (1617) [2023-11-29 00:29:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26641 states to 26641 states and 29631 transitions. [2023-11-29 00:29:12,314 INFO L78 Accepts]: Start accepts. Automaton has 26641 states and 29631 transitions. Word has length 317 [2023-11-29 00:29:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:12,314 INFO L495 AbstractCegarLoop]: Abstraction has 26641 states and 29631 transitions. [2023-11-29 00:29:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 12.473684210526315) internal successors, (474), 39 states have internal predecessors, (474), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-29 00:29:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 26641 states and 29631 transitions. [2023-11-29 00:29:12,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-11-29 00:29:12,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:12,322 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:12,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 00:29:12,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 00:29:12,523 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:29:12,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1107609921, now seen corresponding path program 17 times [2023-11-29 00:29:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:12,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782655246] [2023-11-29 00:29:12,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:12,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:29:12,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981655169] [2023-11-29 00:29:12,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:29:12,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:12,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:12,541 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:12,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 00:29:12,693 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-11-29 00:29:12,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:12,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:29:12,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2830 backedges. 0 proven. 2014 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-11-29 00:29:13,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2830 backedges. 0 proven. 2014 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-11-29 00:29:14,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782655246] [2023-11-29 00:29:14,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:29:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981655169] [2023-11-29 00:29:14,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981655169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:14,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:14,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-29 00:29:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292669667] [2023-11-29 00:29:14,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:29:14,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:29:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:29:14,779 INFO L87 Difference]: Start difference. First operand 26641 states and 29631 transitions. Second operand has 22 states, 21 states have (on average 14.523809523809524) internal successors, (305), 22 states have internal predecessors, (305), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:29:20,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:20,313 INFO L93 Difference]: Finished difference Result 28468 states and 31627 transitions. [2023-11-29 00:29:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 00:29:20,314 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 14.523809523809524) internal successors, (305), 22 states have internal predecessors, (305), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 375 [2023-11-29 00:29:20,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:20,344 INFO L225 Difference]: With dead ends: 28468 [2023-11-29 00:29:20,344 INFO L226 Difference]: Without dead ends: 28467 [2023-11-29 00:29:20,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1279, Invalid=4271, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 00:29:20,350 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 412 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:20,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 827 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 00:29:20,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28467 states. [2023-11-29 00:29:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28467 to 26737. [2023-11-29 00:29:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26737 states, 25108 states have (on average 1.054683766130317) internal successors, (26481), 25111 states have internal predecessors, (26481), 1623 states have call successors, (1623), 2 states have call predecessors, (1623), 2 states have return successors, (1623), 1623 states have call predecessors, (1623), 1623 states have call successors, (1623) [2023-11-29 00:29:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26737 states to 26737 states and 29727 transitions. [2023-11-29 00:29:23,163 INFO L78 Accepts]: Start accepts. Automaton has 26737 states and 29727 transitions. Word has length 375 [2023-11-29 00:29:23,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:23,163 INFO L495 AbstractCegarLoop]: Abstraction has 26737 states and 29727 transitions. [2023-11-29 00:29:23,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 14.523809523809524) internal successors, (305), 22 states have internal predecessors, (305), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:29:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 26737 states and 29727 transitions. [2023-11-29 00:29:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-11-29 00:29:23,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:23,171 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:23,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 00:29:23,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 00:29:23,371 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:29:23,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1615787396, now seen corresponding path program 3 times [2023-11-29 00:29:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:23,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540343763] [2023-11-29 00:29:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:23,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:23,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:29:23,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076086058] [2023-11-29 00:29:23,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:29:23,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:23,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:23,385 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:23,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 00:29:23,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-11-29 00:29:23,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:23,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 00:29:23,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3388 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2023-11-29 00:29:23,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3388 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2023-11-29 00:29:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:24,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540343763] [2023-11-29 00:29:24,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:29:24,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076086058] [2023-11-29 00:29:24,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076086058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:24,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:24,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-11-29 00:29:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073497610] [2023-11-29 00:29:24,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:24,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 00:29:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 00:29:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 00:29:24,554 INFO L87 Difference]: Start difference. First operand 26737 states and 29727 transitions. Second operand has 40 states, 39 states have (on average 14.743589743589743) internal successors, (575), 40 states have internal predecessors, (575), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 00:29:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:33,543 INFO L93 Difference]: Finished difference Result 51089 states and 57511 transitions. [2023-11-29 00:29:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 00:29:33,543 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 14.743589743589743) internal successors, (575), 40 states have internal predecessors, (575), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) Word has length 390 [2023-11-29 00:29:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:33,605 INFO L225 Difference]: With dead ends: 51089 [2023-11-29 00:29:33,605 INFO L226 Difference]: Without dead ends: 51088 [2023-11-29 00:29:33,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 00:29:33,614 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 977 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:33,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 566 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:29:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51088 states. [2023-11-29 00:29:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51088 to 40797. [2023-11-29 00:29:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40797 states, 38288 states have (on average 1.0682459256163812) internal successors, (40901), 38291 states have internal predecessors, (40901), 2503 states have call successors, (2503), 2 states have call predecessors, (2503), 2 states have return successors, (2503), 2503 states have call predecessors, (2503), 2503 states have call successors, (2503) [2023-11-29 00:29:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40797 states to 40797 states and 45907 transitions. [2023-11-29 00:29:37,469 INFO L78 Accepts]: Start accepts. Automaton has 40797 states and 45907 transitions. Word has length 390 [2023-11-29 00:29:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:37,470 INFO L495 AbstractCegarLoop]: Abstraction has 40797 states and 45907 transitions. [2023-11-29 00:29:37,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 14.743589743589743) internal successors, (575), 40 states have internal predecessors, (575), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 00:29:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 40797 states and 45907 transitions. [2023-11-29 00:29:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 00:29:37,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:37,478 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 18, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:37,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-29 00:29:37,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 00:29:37,679 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:29:37,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:37,679 INFO L85 PathProgramCache]: Analyzing trace with hash 149337269, now seen corresponding path program 18 times [2023-11-29 00:29:37,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:37,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165132769] [2023-11-29 00:29:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:37,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:29:37,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399724226] [2023-11-29 00:29:37,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:29:37,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:37,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:37,741 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:37,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 00:29:37,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-11-29 00:29:37,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:37,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:29:38,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3720 backedges. 0 proven. 1756 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2023-11-29 00:29:38,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:39,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165132769] [2023-11-29 00:29:39,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:29:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399724226] [2023-11-29 00:29:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399724226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:39,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:29:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 00:29:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155962480] [2023-11-29 00:29:39,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:29:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:29:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:29:39,137 INFO L87 Difference]: Start difference. First operand 40797 states and 45907 transitions. Second operand has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 00:29:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:42,941 INFO L93 Difference]: Finished difference Result 43379 states and 48752 transitions. [2023-11-29 00:29:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:29:42,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 415 [2023-11-29 00:29:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:42,996 INFO L225 Difference]: With dead ends: 43379 [2023-11-29 00:29:42,996 INFO L226 Difference]: Without dead ends: 43378 [2023-11-29 00:29:43,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:29:43,003 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 43 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:43,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 269 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43378 states. [2023-11-29 00:29:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43378 to 40816. [2023-11-29 00:29:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40816 states, 38306 states have (on average 1.0682921735498356) internal successors, (40922), 38309 states have internal predecessors, (40922), 2504 states have call successors, (2504), 2 states have call predecessors, (2504), 2 states have return successors, (2504), 2504 states have call predecessors, (2504), 2504 states have call successors, (2504) [2023-11-29 00:29:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40816 states to 40816 states and 45930 transitions. [2023-11-29 00:29:46,977 INFO L78 Accepts]: Start accepts. Automaton has 40816 states and 45930 transitions. Word has length 415 [2023-11-29 00:29:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:46,977 INFO L495 AbstractCegarLoop]: Abstraction has 40816 states and 45930 transitions. [2023-11-29 00:29:46,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-29 00:29:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 40816 states and 45930 transitions. [2023-11-29 00:29:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 00:29:46,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:46,986 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:46,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-29 00:29:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 00:29:47,186 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:29:47,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash -797716987, now seen corresponding path program 19 times [2023-11-29 00:29:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:47,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195938463] [2023-11-29 00:29:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:47,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:29:47,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877108267] [2023-11-29 00:29:47,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:29:47,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:47,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:47,205 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:47,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 00:29:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:47,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:29:47,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3464 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2023-11-29 00:29:48,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3464 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2023-11-29 00:29:50,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:50,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195938463] [2023-11-29 00:29:50,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:29:50,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877108267] [2023-11-29 00:29:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877108267] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:50,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 00:29:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819360213] [2023-11-29 00:29:50,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:50,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:29:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:50,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:29:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:29:50,290 INFO L87 Difference]: Start difference. First operand 40816 states and 45930 transitions. Second operand has 28 states, 27 states have (on average 16.11111111111111) internal successors, (435), 28 states have internal predecessors, (435), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 00:29:56,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:56,263 INFO L93 Difference]: Finished difference Result 40823 states and 45930 transitions. [2023-11-29 00:29:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 00:29:56,263 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 16.11111111111111) internal successors, (435), 28 states have internal predecessors, (435), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 415 [2023-11-29 00:29:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:56,308 INFO L225 Difference]: With dead ends: 40823 [2023-11-29 00:29:56,308 INFO L226 Difference]: Without dead ends: 40822 [2023-11-29 00:29:56,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1109, Invalid=2923, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 00:29:56,315 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 184 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:56,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1359 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 00:29:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40822 states. [2023-11-29 00:30:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40822 to 40816. [2023-11-29 00:30:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40816 states, 38306 states have (on average 1.0678744844149741) internal successors, (40906), 38309 states have internal predecessors, (40906), 2504 states have call successors, (2504), 2 states have call predecessors, (2504), 2 states have return successors, (2504), 2504 states have call predecessors, (2504), 2504 states have call successors, (2504) [2023-11-29 00:30:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40816 states to 40816 states and 45914 transitions. [2023-11-29 00:30:00,375 INFO L78 Accepts]: Start accepts. Automaton has 40816 states and 45914 transitions. Word has length 415 [2023-11-29 00:30:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:00,375 INFO L495 AbstractCegarLoop]: Abstraction has 40816 states and 45914 transitions. [2023-11-29 00:30:00,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 16.11111111111111) internal successors, (435), 28 states have internal predecessors, (435), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2023-11-29 00:30:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 40816 states and 45914 transitions. [2023-11-29 00:30:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-29 00:30:00,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:00,386 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:00,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-29 00:30:00,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 00:30:00,586 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:30:00,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash -373208316, now seen corresponding path program 20 times [2023-11-29 00:30:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943790052] [2023-11-29 00:30:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:00,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:00,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:00,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572640037] [2023-11-29 00:30:00,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:30:00,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:00,601 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:00,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 00:30:00,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:30:00,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:30:00,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:30:00,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4115 backedges. 1267 proven. 2004 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2023-11-29 00:30:01,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:02,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4115 backedges. 1267 proven. 2004 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2023-11-29 00:30:02,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:02,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943790052] [2023-11-29 00:30:02,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:02,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572640037] [2023-11-29 00:30:02,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572640037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:02,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:30:02,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 42 [2023-11-29 00:30:02,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062415765] [2023-11-29 00:30:02,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:02,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 00:30:02,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 00:30:02,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1259, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 00:30:02,040 INFO L87 Difference]: Start difference. First operand 40816 states and 45914 transitions. Second operand has 42 states, 42 states have (on average 13.880952380952381) internal successors, (583), 42 states have internal predecessors, (583), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 00:30:13,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:13,585 INFO L93 Difference]: Finished difference Result 126740 states and 145271 transitions. [2023-11-29 00:30:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-11-29 00:30:13,586 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 13.880952380952381) internal successors, (583), 42 states have internal predecessors, (583), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) Word has length 435 [2023-11-29 00:30:13,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:13,719 INFO L225 Difference]: With dead ends: 126740 [2023-11-29 00:30:13,719 INFO L226 Difference]: Without dead ends: 105750 [2023-11-29 00:30:13,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 824 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7200 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4299, Invalid=16293, Unknown=0, NotChecked=0, Total=20592 [2023-11-29 00:30:13,742 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1364 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:13,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 1089 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 00:30:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105750 states. [2023-11-29 00:30:20,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105750 to 78749. [2023-11-29 00:30:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78749 states, 73883 states have (on average 1.076539934761718) internal successors, (79538), 73886 states have internal predecessors, (79538), 4860 states have call successors, (4860), 2 states have call predecessors, (4860), 2 states have return successors, (4860), 4860 states have call predecessors, (4860), 4860 states have call successors, (4860) [2023-11-29 00:30:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78749 states to 78749 states and 89258 transitions. [2023-11-29 00:30:20,373 INFO L78 Accepts]: Start accepts. Automaton has 78749 states and 89258 transitions. Word has length 435 [2023-11-29 00:30:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:20,374 INFO L495 AbstractCegarLoop]: Abstraction has 78749 states and 89258 transitions. [2023-11-29 00:30:20,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 13.880952380952381) internal successors, (583), 42 states have internal predecessors, (583), 39 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-29 00:30:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 78749 states and 89258 transitions. [2023-11-29 00:30:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-29 00:30:20,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:20,381 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:20,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 00:30:20,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 00:30:20,582 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:30:20,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash -677641010, now seen corresponding path program 21 times [2023-11-29 00:30:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106663169] [2023-11-29 00:30:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:20,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:20,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941707074] [2023-11-29 00:30:20,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:30:20,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:20,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:20,596 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:20,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 00:30:20,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-29 00:30:20,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:30:20,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:30:20,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4051 backedges. 1514 proven. 335 refuted. 0 times theorem prover too weak. 2202 trivial. 0 not checked. [2023-11-29 00:30:20,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:20,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106663169] [2023-11-29 00:30:20,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:20,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941707074] [2023-11-29 00:30:20,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941707074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:20,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:30:20,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 00:30:20,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171691134] [2023-11-29 00:30:20,972 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:20,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:30:20,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:20,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:30:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:30:20,974 INFO L87 Difference]: Start difference. First operand 78749 states and 89258 transitions. Second operand has 12 states, 11 states have (on average 12.636363636363637) internal successors, (139), 12 states have internal predecessors, (139), 8 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 00:30:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:27,851 INFO L93 Difference]: Finished difference Result 84148 states and 95247 transitions. [2023-11-29 00:30:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:30:27,852 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.636363636363637) internal successors, (139), 12 states have internal predecessors, (139), 8 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 435 [2023-11-29 00:30:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:27,933 INFO L225 Difference]: With dead ends: 84148 [2023-11-29 00:30:27,933 INFO L226 Difference]: Without dead ends: 77735 [2023-11-29 00:30:27,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:30:27,947 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 129 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:27,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 999 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:30:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77735 states. [2023-11-29 00:30:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77735 to 71676. [2023-11-29 00:30:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71676 states, 67243 states have (on average 1.0784914414883333) internal successors, (72521), 67246 states have internal predecessors, (72521), 4427 states have call successors, (4427), 2 states have call predecessors, (4427), 2 states have return successors, (4427), 4427 states have call predecessors, (4427), 4427 states have call successors, (4427) [2023-11-29 00:30:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71676 states to 71676 states and 81375 transitions. [2023-11-29 00:30:33,698 INFO L78 Accepts]: Start accepts. Automaton has 71676 states and 81375 transitions. Word has length 435 [2023-11-29 00:30:33,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:33,698 INFO L495 AbstractCegarLoop]: Abstraction has 71676 states and 81375 transitions. [2023-11-29 00:30:33,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.636363636363637) internal successors, (139), 12 states have internal predecessors, (139), 8 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 00:30:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 71676 states and 81375 transitions. [2023-11-29 00:30:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-11-29 00:30:33,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:33,706 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:33,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 00:30:33,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-11-29 00:30:33,907 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:30:33,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash -242083181, now seen corresponding path program 4 times [2023-11-29 00:30:33,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:33,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226266387] [2023-11-29 00:30:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:33,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:33,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:33,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107302797] [2023-11-29 00:30:33,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:30:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:33,922 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:33,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 00:30:34,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:30:34,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:30:34,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:30:34,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4954 backedges. 0 proven. 3938 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2023-11-29 00:30:34,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4954 backedges. 0 proven. 3938 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2023-11-29 00:30:35,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226266387] [2023-11-29 00:30:35,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107302797] [2023-11-29 00:30:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107302797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:30:35,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:30:35,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-29 00:30:35,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079434931] [2023-11-29 00:30:35,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:35,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 00:30:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:35,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 00:30:35,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:30:35,342 INFO L87 Difference]: Start difference. First operand 71676 states and 81375 transitions. Second operand has 48 states, 47 states have (on average 14.659574468085106) internal successors, (689), 48 states have internal predecessors, (689), 47 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-29 00:30:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:43,038 INFO L93 Difference]: Finished difference Result 89575 states and 102987 transitions. [2023-11-29 00:30:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 00:30:43,039 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 14.659574468085106) internal successors, (689), 48 states have internal predecessors, (689), 47 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) Word has length 467 [2023-11-29 00:30:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:43,133 INFO L225 Difference]: With dead ends: 89575 [2023-11-29 00:30:43,133 INFO L226 Difference]: Without dead ends: 89574 [2023-11-29 00:30:43,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:30:43,148 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 571 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:43,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 437 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:30:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89574 states. [2023-11-29 00:30:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89574 to 86933. [2023-11-29 00:30:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86933 states, 81547 states have (on average 1.0874710289771543) internal successors, (88680), 81550 states have internal predecessors, (88680), 5380 states have call successors, (5380), 2 states have call predecessors, (5380), 2 states have return successors, (5380), 5380 states have call predecessors, (5380), 5380 states have call successors, (5380) [2023-11-29 00:30:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86933 states to 86933 states and 99440 transitions. [2023-11-29 00:30:51,334 INFO L78 Accepts]: Start accepts. Automaton has 86933 states and 99440 transitions. Word has length 467 [2023-11-29 00:30:51,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:51,335 INFO L495 AbstractCegarLoop]: Abstraction has 86933 states and 99440 transitions. [2023-11-29 00:30:51,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 14.659574468085106) internal successors, (689), 48 states have internal predecessors, (689), 47 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-11-29 00:30:51,335 INFO L276 IsEmpty]: Start isEmpty. Operand 86933 states and 99440 transitions. [2023-11-29 00:30:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-11-29 00:30:51,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:51,344 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:51,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-11-29 00:30:51,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-11-29 00:30:51,544 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:30:51,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:51,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1638857659, now seen corresponding path program 22 times [2023-11-29 00:30:51,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:51,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702125288] [2023-11-29 00:30:51,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:51,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:51,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793676765] [2023-11-29 00:30:51,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:30:51,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:51,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:51,561 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:51,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 00:30:51,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:30:51,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:30:51,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:30:51,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5344 backedges. 0 proven. 3396 refuted. 0 times theorem prover too weak. 1948 trivial. 0 not checked. [2023-11-29 00:30:52,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:52,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:52,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702125288] [2023-11-29 00:30:52,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:52,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793676765] [2023-11-29 00:30:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793676765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:52,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:30:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-29 00:30:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537231550] [2023-11-29 00:30:52,722 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:30:52,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:30:52,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:52,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:30:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:30:52,723 INFO L87 Difference]: Start difference. First operand 86933 states and 99440 transitions. Second operand has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 14 states have internal predecessors, (171), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:31:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:00,658 INFO L93 Difference]: Finished difference Result 88943 states and 101669 transitions. [2023-11-29 00:31:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:31:00,659 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 14 states have internal predecessors, (171), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 495 [2023-11-29 00:31:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:00,742 INFO L225 Difference]: With dead ends: 88943 [2023-11-29 00:31:00,742 INFO L226 Difference]: Without dead ends: 88942 [2023-11-29 00:31:00,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:31:00,754 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 40 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:00,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 639 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:31:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88942 states. [2023-11-29 00:31:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88942 to 86933. [2023-11-29 00:31:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86933 states, 81547 states have (on average 1.0874587661103412) internal successors, (88679), 81550 states have internal predecessors, (88679), 5380 states have call successors, (5380), 2 states have call predecessors, (5380), 2 states have return successors, (5380), 5380 states have call predecessors, (5380), 5380 states have call successors, (5380) [2023-11-29 00:31:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86933 states to 86933 states and 99439 transitions. [2023-11-29 00:31:07,827 INFO L78 Accepts]: Start accepts. Automaton has 86933 states and 99439 transitions. Word has length 495 [2023-11-29 00:31:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:07,828 INFO L495 AbstractCegarLoop]: Abstraction has 86933 states and 99439 transitions. [2023-11-29 00:31:07,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.153846153846153) internal successors, (171), 14 states have internal predecessors, (171), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-29 00:31:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 86933 states and 99439 transitions. [2023-11-29 00:31:07,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-11-29 00:31:07,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:07,838 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:07,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-29 00:31:08,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:08,038 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:31:08,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash -597746678, now seen corresponding path program 23 times [2023-11-29 00:31:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:08,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964722470] [2023-11-29 00:31:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:08,053 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:08,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378100891] [2023-11-29 00:31:08,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:31:08,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:08,054 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:08,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 00:31:08,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-11-29 00:31:08,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:31:08,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:31:08,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5815 backedges. 3199 proven. 1508 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2023-11-29 00:31:08,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5815 backedges. 2655 proven. 1508 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-11-29 00:31:09,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:09,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964722470] [2023-11-29 00:31:09,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:09,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378100891] [2023-11-29 00:31:09,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378100891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:09,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:31:09,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 28 [2023-11-29 00:31:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049205495] [2023-11-29 00:31:09,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:31:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:31:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:31:09,124 INFO L87 Difference]: Start difference. First operand 86933 states and 99439 transitions. Second operand has 28 states, 28 states have (on average 14.357142857142858) internal successors, (402), 28 states have internal predecessors, (402), 27 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2023-11-29 00:31:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:16,660 INFO L93 Difference]: Finished difference Result 97055 states and 110882 transitions. [2023-11-29 00:31:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:31:16,660 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 14.357142857142858) internal successors, (402), 28 states have internal predecessors, (402), 27 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) Word has length 515 [2023-11-29 00:31:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:16,747 INFO L225 Difference]: With dead ends: 97055 [2023-11-29 00:31:16,747 INFO L226 Difference]: Without dead ends: 82987 [2023-11-29 00:31:16,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 992 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=999, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:31:16,811 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 111 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:16,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 800 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:31:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82987 states. [2023-11-29 00:31:23,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82987 to 82169. [2023-11-29 00:31:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82169 states, 77065 states have (on average 1.0832803477583859) internal successors, (83483), 77068 states have internal predecessors, (83483), 5098 states have call successors, (5098), 2 states have call predecessors, (5098), 2 states have return successors, (5098), 5098 states have call predecessors, (5098), 5098 states have call successors, (5098) [2023-11-29 00:31:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82169 states to 82169 states and 93679 transitions. [2023-11-29 00:31:23,390 INFO L78 Accepts]: Start accepts. Automaton has 82169 states and 93679 transitions. Word has length 515 [2023-11-29 00:31:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:23,390 INFO L495 AbstractCegarLoop]: Abstraction has 82169 states and 93679 transitions. [2023-11-29 00:31:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.357142857142858) internal successors, (402), 28 states have internal predecessors, (402), 27 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2023-11-29 00:31:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 82169 states and 93679 transitions. [2023-11-29 00:31:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 00:31:23,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:23,400 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 24, 24, 24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:23,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-29 00:31:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:23,600 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:31:23,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash -577200113, now seen corresponding path program 24 times [2023-11-29 00:31:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:23,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099168602] [2023-11-29 00:31:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:23,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:23,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428148777] [2023-11-29 00:31:23,617 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:31:23,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:23,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:23,618 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:23,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-29 00:31:23,847 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2023-11-29 00:31:23,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:31:23,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 00:31:23,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6390 backedges. 0 proven. 3886 refuted. 0 times theorem prover too weak. 2504 trivial. 0 not checked. [2023-11-29 00:31:24,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:25,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099168602] [2023-11-29 00:31:25,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428148777] [2023-11-29 00:31:25,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428148777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:31:25,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:31:25,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-29 00:31:25,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736912114] [2023-11-29 00:31:25,009 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:25,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:31:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:31:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:31:25,011 INFO L87 Difference]: Start difference. First operand 82169 states and 93679 transitions. Second operand has 18 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:31:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:33,037 INFO L93 Difference]: Finished difference Result 84355 states and 96206 transitions. [2023-11-29 00:31:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:31:33,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 535 [2023-11-29 00:31:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:33,121 INFO L225 Difference]: With dead ends: 84355 [2023-11-29 00:31:33,121 INFO L226 Difference]: Without dead ends: 84354 [2023-11-29 00:31:33,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:31:33,131 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 48 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:33,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1221 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:31:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84354 states. [2023-11-29 00:31:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84354 to 82667. [2023-11-29 00:31:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82667 states, 77533 states have (on average 1.0835257245302001) internal successors, (84009), 77536 states have internal predecessors, (84009), 5128 states have call successors, (5128), 2 states have call predecessors, (5128), 2 states have return successors, (5128), 5128 states have call predecessors, (5128), 5128 states have call successors, (5128) [2023-11-29 00:31:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82667 states to 82667 states and 94265 transitions. [2023-11-29 00:31:39,664 INFO L78 Accepts]: Start accepts. Automaton has 82667 states and 94265 transitions. Word has length 535 [2023-11-29 00:31:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:39,665 INFO L495 AbstractCegarLoop]: Abstraction has 82667 states and 94265 transitions. [2023-11-29 00:31:39,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-29 00:31:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 82667 states and 94265 transitions. [2023-11-29 00:31:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-11-29 00:31:39,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:39,680 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 25, 25, 25, 25, 25, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:39,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-29 00:31:39,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:39,881 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:31:39,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1393952094, now seen corresponding path program 25 times [2023-11-29 00:31:39,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:39,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284629821] [2023-11-29 00:31:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:39,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:39,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503098916] [2023-11-29 00:31:39,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:31:39,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:39,903 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:39,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-29 00:31:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:40,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:31:40,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6905 backedges. 1489 proven. 4008 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2023-11-29 00:31:40,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6905 backedges. 1489 proven. 4008 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2023-11-29 00:31:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284629821] [2023-11-29 00:31:41,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503098916] [2023-11-29 00:31:41,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503098916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:31:41,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:31:41,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 43 [2023-11-29 00:31:41,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376977553] [2023-11-29 00:31:41,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:41,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 00:31:41,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 00:31:41,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1372, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:31:41,615 INFO L87 Difference]: Start difference. First operand 82667 states and 94265 transitions. Second operand has 43 states, 43 states have (on average 14.186046511627907) internal successors, (610), 43 states have internal predecessors, (610), 41 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-11-29 00:31:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:51,201 INFO L93 Difference]: Finished difference Result 163362 states and 188256 transitions. [2023-11-29 00:31:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 00:31:51,202 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 14.186046511627907) internal successors, (610), 43 states have internal predecessors, (610), 41 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) Word has length 555 [2023-11-29 00:31:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:51,337 INFO L225 Difference]: With dead ends: 163362 [2023-11-29 00:31:51,337 INFO L226 Difference]: Without dead ends: 108581 [2023-11-29 00:31:51,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 1052 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=763, Invalid=2429, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 00:31:51,369 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 150 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:51,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 1510 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2795 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:31:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108581 states. [2023-11-29 00:31:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108581 to 88451. [2023-11-29 00:31:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88451 states, 82940 states have (on average 1.0830721003134796) internal successors, (89830), 82943 states have internal predecessors, (89830), 5505 states have call successors, (5505), 2 states have call predecessors, (5505), 2 states have return successors, (5505), 5505 states have call predecessors, (5505), 5505 states have call successors, (5505) [2023-11-29 00:31:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88451 states to 88451 states and 100840 transitions. [2023-11-29 00:31:58,501 INFO L78 Accepts]: Start accepts. Automaton has 88451 states and 100840 transitions. Word has length 555 [2023-11-29 00:31:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:58,501 INFO L495 AbstractCegarLoop]: Abstraction has 88451 states and 100840 transitions. [2023-11-29 00:31:58,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 14.186046511627907) internal successors, (610), 43 states have internal predecessors, (610), 41 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-11-29 00:31:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 88451 states and 100840 transitions. [2023-11-29 00:31:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-11-29 00:31:58,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:58,512 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 24, 24, 24, 24, 24, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:58,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-11-29 00:31:58,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:58,712 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:31:58,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -77035224, now seen corresponding path program 26 times [2023-11-29 00:31:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:58,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413387175] [2023-11-29 00:31:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:58,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032615647] [2023-11-29 00:31:58,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:31:58,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:58,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:58,729 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:58,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-29 00:31:58,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:31:58,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:31:58,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:31:58,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6817 backedges. 0 proven. 4321 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2023-11-29 00:31:59,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413387175] [2023-11-29 00:31:59,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032615647] [2023-11-29 00:31:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032615647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:31:59,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:31:59,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 00:31:59,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364693252] [2023-11-29 00:31:59,975 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:31:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:31:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:31:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:31:59,976 INFO L87 Difference]: Start difference. First operand 88451 states and 100840 transitions. Second operand has 15 states, 14 states have (on average 13.285714285714286) internal successors, (186), 15 states have internal predecessors, (186), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 00:32:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:08,328 INFO L93 Difference]: Finished difference Result 90167 states and 102763 transitions. [2023-11-29 00:32:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:32:08,329 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 13.285714285714286) internal successors, (186), 15 states have internal predecessors, (186), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 555 [2023-11-29 00:32:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:08,414 INFO L225 Difference]: With dead ends: 90167 [2023-11-29 00:32:08,414 INFO L226 Difference]: Without dead ends: 90166 [2023-11-29 00:32:08,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:32:08,426 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 42 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:08,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 810 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:32:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90166 states. [2023-11-29 00:32:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90166 to 88451. [2023-11-29 00:32:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88451 states, 82940 states have (on average 1.083060043404871) internal successors, (89829), 82943 states have internal predecessors, (89829), 5505 states have call successors, (5505), 2 states have call predecessors, (5505), 2 states have return successors, (5505), 5505 states have call predecessors, (5505), 5505 states have call successors, (5505) [2023-11-29 00:32:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88451 states to 88451 states and 100839 transitions. [2023-11-29 00:32:15,449 INFO L78 Accepts]: Start accepts. Automaton has 88451 states and 100839 transitions. Word has length 555 [2023-11-29 00:32:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:15,450 INFO L495 AbstractCegarLoop]: Abstraction has 88451 states and 100839 transitions. [2023-11-29 00:32:15,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 13.285714285714286) internal successors, (186), 15 states have internal predecessors, (186), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 00:32:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 88451 states and 100839 transitions. [2023-11-29 00:32:15,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-29 00:32:15,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:15,459 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 26, 26, 26, 26, 26, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:15,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:15,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:15,660 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:32:15,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1383490605, now seen corresponding path program 27 times [2023-11-29 00:32:15,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:15,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875079660] [2023-11-29 00:32:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:15,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:15,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530839608] [2023-11-29 00:32:15,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:32:15,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:15,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:15,677 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:15,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-29 00:32:15,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-11-29 00:32:15,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:15,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 00:32:15,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7440 backedges. 0 proven. 4520 refuted. 0 times theorem prover too weak. 2920 trivial. 0 not checked. [2023-11-29 00:32:16,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:16,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:16,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875079660] [2023-11-29 00:32:16,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:16,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530839608] [2023-11-29 00:32:16,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530839608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:32:16,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:32:16,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-29 00:32:16,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431413620] [2023-11-29 00:32:16,778 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:32:16,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:32:16,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:32:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:32:16,779 INFO L87 Difference]: Start difference. First operand 88451 states and 100839 transitions. Second operand has 19 states, 18 states have (on average 13.38888888888889) internal successors, (241), 19 states have internal predecessors, (241), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-29 00:32:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:25,838 INFO L93 Difference]: Finished difference Result 117616 states and 134946 transitions. [2023-11-29 00:32:25,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 00:32:25,839 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 13.38888888888889) internal successors, (241), 19 states have internal predecessors, (241), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 575 [2023-11-29 00:32:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:25,927 INFO L225 Difference]: With dead ends: 117616 [2023-11-29 00:32:25,927 INFO L226 Difference]: Without dead ends: 89267 [2023-11-29 00:32:25,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=2296, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 00:32:25,952 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 467 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 6180 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 6210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:25,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 2434 Invalid, 6210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 6180 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 00:32:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89267 states. [2023-11-29 00:32:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89267 to 88396. [2023-11-29 00:32:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88396 states, 82887 states have (on average 1.083052830962636) internal successors, (89771), 82890 states have internal predecessors, (89771), 5503 states have call successors, (5503), 2 states have call predecessors, (5503), 2 states have return successors, (5503), 5503 states have call predecessors, (5503), 5503 states have call successors, (5503) [2023-11-29 00:32:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88396 states to 88396 states and 100777 transitions. [2023-11-29 00:32:33,172 INFO L78 Accepts]: Start accepts. Automaton has 88396 states and 100777 transitions. Word has length 575 [2023-11-29 00:32:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:33,173 INFO L495 AbstractCegarLoop]: Abstraction has 88396 states and 100777 transitions. [2023-11-29 00:32:33,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 13.38888888888889) internal successors, (241), 19 states have internal predecessors, (241), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-29 00:32:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 88396 states and 100777 transitions. [2023-11-29 00:32:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-29 00:32:33,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:33,183 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 25, 25, 25, 25, 25, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:33,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:33,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-29 00:32:33,384 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:32:33,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:33,384 INFO L85 PathProgramCache]: Analyzing trace with hash 209006839, now seen corresponding path program 28 times [2023-11-29 00:32:33,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:33,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322771193] [2023-11-29 00:32:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:33,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:33,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524705965] [2023-11-29 00:32:33,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:32:33,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:33,401 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:33,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-29 00:32:33,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:32:33,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:33,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:32:33,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7348 backedges. 4029 proven. 1912 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2023-11-29 00:32:34,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7348 backedges. 3345 proven. 1912 refuted. 0 times theorem prover too weak. 2091 trivial. 0 not checked. [2023-11-29 00:32:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322771193] [2023-11-29 00:32:34,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:34,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524705965] [2023-11-29 00:32:34,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524705965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:32:34,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:32:34,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 31 [2023-11-29 00:32:34,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327257217] [2023-11-29 00:32:34,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:32:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 00:32:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 00:32:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:32:34,701 INFO L87 Difference]: Start difference. First operand 88396 states and 100777 transitions. Second operand has 31 states, 31 states have (on average 14.419354838709678) internal successors, (447), 31 states have internal predecessors, (447), 30 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2023-11-29 00:32:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:43,009 INFO L93 Difference]: Finished difference Result 94897 states and 108083 transitions. [2023-11-29 00:32:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 00:32:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 14.419354838709678) internal successors, (447), 31 states have internal predecessors, (447), 30 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) Word has length 575 [2023-11-29 00:32:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:43,100 INFO L225 Difference]: With dead ends: 94897 [2023-11-29 00:32:43,100 INFO L226 Difference]: Without dead ends: 88404 [2023-11-29 00:32:43,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 1108 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 00:32:43,114 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 102 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:43,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1380 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 00:32:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88404 states. [2023-11-29 00:32:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88404 to 87672. [2023-11-29 00:32:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87672 states, 82206 states have (on average 1.0817701870909666) internal successors, (88928), 82209 states have internal predecessors, (88928), 5460 states have call successors, (5460), 2 states have call predecessors, (5460), 2 states have return successors, (5460), 5460 states have call predecessors, (5460), 5460 states have call successors, (5460) [2023-11-29 00:32:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87672 states to 87672 states and 99848 transitions. [2023-11-29 00:32:50,094 INFO L78 Accepts]: Start accepts. Automaton has 87672 states and 99848 transitions. Word has length 575 [2023-11-29 00:32:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:50,094 INFO L495 AbstractCegarLoop]: Abstraction has 87672 states and 99848 transitions. [2023-11-29 00:32:50,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.419354838709678) internal successors, (447), 31 states have internal predecessors, (447), 30 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 30 states have call predecessors, (32), 30 states have call successors, (32) [2023-11-29 00:32:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 87672 states and 99848 transitions. [2023-11-29 00:32:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2023-11-29 00:32:50,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:50,105 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 24, 24, 24, 24, 24, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:50,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-11-29 00:32:50,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-29 00:32:50,305 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:32:50,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:50,306 INFO L85 PathProgramCache]: Analyzing trace with hash 826118081, now seen corresponding path program 29 times [2023-11-29 00:32:50,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:50,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805882478] [2023-11-29 00:32:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:50,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:50,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:50,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953473818] [2023-11-29 00:32:50,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:32:50,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:50,322 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:50,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-29 00:32:50,487 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-11-29 00:32:50,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:32:50,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:32:50,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:50,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7264 backedges. 4676 proven. 938 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2023-11-29 00:32:50,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7264 backedges. 4148 proven. 938 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-11-29 00:32:51,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805882478] [2023-11-29 00:32:51,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:51,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953473818] [2023-11-29 00:32:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953473818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:32:51,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:32:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2023-11-29 00:32:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120033662] [2023-11-29 00:32:51,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:32:51,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 00:32:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 00:32:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-11-29 00:32:51,283 INFO L87 Difference]: Start difference. First operand 87672 states and 99848 transitions. Second operand has 25 states, 25 states have (on average 14.68) internal successors, (367), 25 states have internal predecessors, (367), 23 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 23 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-29 00:32:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:59,586 INFO L93 Difference]: Finished difference Result 92682 states and 105460 transitions. [2023-11-29 00:32:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:32:59,587 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.68) internal successors, (367), 25 states have internal predecessors, (367), 23 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 23 states have call predecessors, (26), 23 states have call successors, (26) Word has length 575 [2023-11-29 00:32:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:59,674 INFO L225 Difference]: With dead ends: 92682 [2023-11-29 00:32:59,674 INFO L226 Difference]: Without dead ends: 87581 [2023-11-29 00:32:59,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1128 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 00:32:59,687 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 219 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:59,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1359 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 00:32:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87581 states. [2023-11-29 00:33:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87581 to 86774. [2023-11-29 00:33:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86774 states, 81362 states have (on average 1.0814262186278607) internal successors, (87987), 81365 states have internal predecessors, (87987), 5406 states have call successors, (5406), 2 states have call predecessors, (5406), 2 states have return successors, (5406), 5406 states have call predecessors, (5406), 5406 states have call successors, (5406) [2023-11-29 00:33:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86774 states to 86774 states and 98799 transitions. [2023-11-29 00:33:06,625 INFO L78 Accepts]: Start accepts. Automaton has 86774 states and 98799 transitions. Word has length 575 [2023-11-29 00:33:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:06,626 INFO L495 AbstractCegarLoop]: Abstraction has 86774 states and 98799 transitions. [2023-11-29 00:33:06,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.68) internal successors, (367), 25 states have internal predecessors, (367), 23 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 23 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-29 00:33:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 86774 states and 98799 transitions. [2023-11-29 00:33:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-29 00:33:06,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:06,637 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 28, 28, 28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:06,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-11-29 00:33:06,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-29 00:33:06,837 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:33:06,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2109296053, now seen corresponding path program 30 times [2023-11-29 00:33:06,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:06,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733785225] [2023-11-29 00:33:06,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:06,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:06,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:33:06,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283226291] [2023-11-29 00:33:06,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:33:06,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:33:06,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:33:06,857 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:33:06,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-11-29 00:33:07,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-11-29 00:33:07,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:33:07,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 00:33:07,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:33:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8570 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 3368 trivial. 0 not checked. [2023-11-29 00:33:08,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:33:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8570 backedges. 0 proven. 5202 refuted. 0 times theorem prover too weak. 3368 trivial. 0 not checked. [2023-11-29 00:33:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733785225] [2023-11-29 00:33:11,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:33:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283226291] [2023-11-29 00:33:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283226291] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:33:11,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:33:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-11-29 00:33:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681143330] [2023-11-29 00:33:11,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:33:11,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 00:33:11,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 00:33:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=627, Invalid=855, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 00:33:11,077 INFO L87 Difference]: Start difference. First operand 86774 states and 98799 transitions. Second operand has 39 states, 38 states have (on average 13.31578947368421) internal successors, (506), 39 states have internal predecessors, (506), 34 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2023-11-29 00:33:21,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:21,380 INFO L93 Difference]: Finished difference Result 92871 states and 105802 transitions. [2023-11-29 00:33:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 00:33:21,381 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 13.31578947368421) internal successors, (506), 39 states have internal predecessors, (506), 34 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) Word has length 615 [2023-11-29 00:33:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:21,469 INFO L225 Difference]: With dead ends: 92871 [2023-11-29 00:33:21,470 INFO L226 Difference]: Without dead ends: 92870 [2023-11-29 00:33:21,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1191 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2139, Invalid=2973, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 00:33:21,481 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 328 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:21,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 325 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:33:21,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92870 states. [2023-11-29 00:33:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92870 to 89817. [2023-11-29 00:33:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89817 states, 84215 states have (on average 1.082313127115122) internal successors, (91147), 84218 states have internal predecessors, (91147), 5596 states have call successors, (5596), 2 states have call predecessors, (5596), 2 states have return successors, (5596), 5596 states have call predecessors, (5596), 5596 states have call successors, (5596) [2023-11-29 00:33:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89817 states to 89817 states and 102339 transitions. [2023-11-29 00:33:29,069 INFO L78 Accepts]: Start accepts. Automaton has 89817 states and 102339 transitions. Word has length 615 [2023-11-29 00:33:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:29,069 INFO L495 AbstractCegarLoop]: Abstraction has 89817 states and 102339 transitions. [2023-11-29 00:33:29,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 13.31578947368421) internal successors, (506), 39 states have internal predecessors, (506), 34 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2023-11-29 00:33:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 89817 states and 102339 transitions. [2023-11-29 00:33:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2023-11-29 00:33:29,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:29,081 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:29,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-11-29 00:33:29,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:33:29,282 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:33:29,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash -336072686, now seen corresponding path program 8 times [2023-11-29 00:33:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:29,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577822032] [2023-11-29 00:33:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:29,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:33:29,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535804677] [2023-11-29 00:33:29,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:33:29,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:33:29,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:33:29,300 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:33:29,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-29 00:33:29,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:33:29,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:33:29,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 00:33:29,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:33:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9339 backedges. 90 proven. 7475 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2023-11-29 00:33:30,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:33:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9339 backedges. 90 proven. 7475 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2023-11-29 00:33:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577822032] [2023-11-29 00:33:32,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:33:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535804677] [2023-11-29 00:33:32,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535804677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:33:32,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:33:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 70 [2023-11-29 00:33:32,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461008670] [2023-11-29 00:33:32,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:33:32,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-29 00:33:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-29 00:33:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2038, Invalid=2932, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 00:33:32,139 INFO L87 Difference]: Start difference. First operand 89817 states and 102339 transitions. Second operand has 71 states, 70 states have (on average 13.628571428571428) internal successors, (954), 71 states have internal predecessors, (954), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-11-29 00:33:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:58,859 INFO L93 Difference]: Finished difference Result 153292 states and 174595 transitions. [2023-11-29 00:33:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2023-11-29 00:33:58,859 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 13.628571428571428) internal successors, (954), 71 states have internal predecessors, (954), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) Word has length 637 [2023-11-29 00:33:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:59,045 INFO L225 Difference]: With dead ends: 153292 [2023-11-29 00:33:59,046 INFO L226 Difference]: Without dead ends: 153291 [2023-11-29 00:33:59,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1428 GetRequests, 1203 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16496 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=17203, Invalid=34099, Unknown=0, NotChecked=0, Total=51302 [2023-11-29 00:33:59,067 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1551 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:59,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 243 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 00:33:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153291 states. [2023-11-29 00:34:18,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153291 to 152661. [2023-11-29 00:34:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152661 states, 143242 states have (on average 1.0548302872062663) internal successors, (151096), 143245 states have internal predecessors, (151096), 9413 states have call successors, (9413), 2 states have call predecessors, (9413), 2 states have return successors, (9413), 9413 states have call predecessors, (9413), 9413 states have call successors, (9413) [2023-11-29 00:34:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152661 states to 152661 states and 169922 transitions. [2023-11-29 00:34:18,375 INFO L78 Accepts]: Start accepts. Automaton has 152661 states and 169922 transitions. Word has length 637 [2023-11-29 00:34:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:18,375 INFO L495 AbstractCegarLoop]: Abstraction has 152661 states and 169922 transitions. [2023-11-29 00:34:18,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 13.628571428571428) internal successors, (954), 71 states have internal predecessors, (954), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-11-29 00:34:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 152661 states and 169922 transitions. [2023-11-29 00:34:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2023-11-29 00:34:18,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:18,393 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 28, 28, 28, 28, 28, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:18,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-11-29 00:34:18,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:18,593 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:34:18,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash -723593528, now seen corresponding path program 31 times [2023-11-29 00:34:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232458756] [2023-11-29 00:34:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:18,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:34:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760116048] [2023-11-29 00:34:18,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:34:18,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:18,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:34:18,614 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:34:18,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-29 00:34:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:18,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:34:18,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:34:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11225 backedges. 0 proven. 7977 refuted. 0 times theorem prover too weak. 3248 trivial. 0 not checked. [2023-11-29 00:34:20,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:34:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232458756] [2023-11-29 00:34:20,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:34:20,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760116048] [2023-11-29 00:34:20,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760116048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:34:20,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:34:20,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-29 00:34:20,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824298532] [2023-11-29 00:34:20,286 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:34:20,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:34:20,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:34:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:34:20,287 INFO L87 Difference]: Start difference. First operand 152661 states and 169922 transitions. Second operand has 15 states, 14 states have (on average 14.714285714285714) internal successors, (206), 15 states have internal predecessors, (206), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 00:34:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:38,640 INFO L93 Difference]: Finished difference Result 152662 states and 169922 transitions. [2023-11-29 00:34:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:34:38,640 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 14.714285714285714) internal successors, (206), 15 states have internal predecessors, (206), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 715 [2023-11-29 00:34:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:38,802 INFO L225 Difference]: With dead ends: 152662 [2023-11-29 00:34:38,802 INFO L226 Difference]: Without dead ends: 152661 [2023-11-29 00:34:38,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:34:38,821 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:38,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 504 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:34:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152661 states. [2023-11-29 00:34:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152661 to 152661. [2023-11-29 00:34:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152661 states, 143242 states have (on average 1.0548233060135994) internal successors, (151095), 143245 states have internal predecessors, (151095), 9413 states have call successors, (9413), 2 states have call predecessors, (9413), 2 states have return successors, (9413), 9413 states have call predecessors, (9413), 9413 states have call successors, (9413) [2023-11-29 00:34:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152661 states to 152661 states and 169921 transitions. [2023-11-29 00:34:57,855 INFO L78 Accepts]: Start accepts. Automaton has 152661 states and 169921 transitions. Word has length 715 [2023-11-29 00:34:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:57,856 INFO L495 AbstractCegarLoop]: Abstraction has 152661 states and 169921 transitions. [2023-11-29 00:34:57,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 14.714285714285714) internal successors, (206), 15 states have internal predecessors, (206), 12 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-29 00:34:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 152661 states and 169921 transitions. [2023-11-29 00:34:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2023-11-29 00:34:57,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:57,878 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:57,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-11-29 00:34:58,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:58,078 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:34:58,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:58,079 INFO L85 PathProgramCache]: Analyzing trace with hash -732872440, now seen corresponding path program 4 times [2023-11-29 00:34:58,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:58,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346664899] [2023-11-29 00:34:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:58,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:58,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:34:58,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587787470] [2023-11-29 00:34:58,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:34:58,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:58,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:34:58,102 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:34:58,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-29 00:34:58,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:34:58,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:34:58,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 00:34:58,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:34:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14748 backedges. 0 proven. 11780 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2023-11-29 00:34:59,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:35:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 14748 backedges. 0 proven. 11780 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2023-11-29 00:35:01,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:01,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346664899] [2023-11-29 00:35:01,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:35:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587787470] [2023-11-29 00:35:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587787470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:35:01,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:35:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2023-11-29 00:35:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356033569] [2023-11-29 00:35:01,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:35:01,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-11-29 00:35:01,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-11-29 00:35:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 00:35:01,432 INFO L87 Difference]: Start difference. First operand 152661 states and 169921 transitions. Second operand has 80 states, 79 states have (on average 14.873417721518987) internal successors, (1175), 80 states have internal predecessors, (1175), 79 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 79 states have call predecessors, (80), 79 states have call successors, (80) [2023-11-29 00:36:04,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:04,485 INFO L93 Difference]: Finished difference Result 297230 states and 334077 transitions. [2023-11-29 00:36:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-29 00:36:04,485 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 14.873417721518987) internal successors, (1175), 80 states have internal predecessors, (1175), 79 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 79 states have call predecessors, (80), 79 states have call successors, (80) Word has length 790 [2023-11-29 00:36:04,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:04,903 INFO L225 Difference]: With dead ends: 297230 [2023-11-29 00:36:04,903 INFO L226 Difference]: Without dead ends: 297229 [2023-11-29 00:36:04,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1578 GetRequests, 1500 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 00:36:04,951 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2106 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:04,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 1119 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 00:36:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297229 states. [2023-11-29 00:36:31,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297229 to 236461. [2023-11-29 00:36:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236461 states, 221802 states have (on average 1.067325813112596) internal successors, (236735), 221805 states have internal predecessors, (236735), 14653 states have call successors, (14653), 2 states have call predecessors, (14653), 2 states have return successors, (14653), 14653 states have call predecessors, (14653), 14653 states have call successors, (14653) [2023-11-29 00:36:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236461 states to 236461 states and 266041 transitions. [2023-11-29 00:36:31,983 INFO L78 Accepts]: Start accepts. Automaton has 236461 states and 266041 transitions. Word has length 790 [2023-11-29 00:36:31,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:36:31,984 INFO L495 AbstractCegarLoop]: Abstraction has 236461 states and 266041 transitions. [2023-11-29 00:36:31,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 14.873417721518987) internal successors, (1175), 80 states have internal predecessors, (1175), 79 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 79 states have call predecessors, (80), 79 states have call successors, (80) [2023-11-29 00:36:31,984 INFO L276 IsEmpty]: Start isEmpty. Operand 236461 states and 266041 transitions. [2023-11-29 00:36:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-29 00:36:32,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:36:32,007 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 32, 32, 32, 32, 32, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:36:32,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-11-29 00:36:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-11-29 00:36:32,207 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:36:32,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:36:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1397284451, now seen corresponding path program 32 times [2023-11-29 00:36:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:36:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094589453] [2023-11-29 00:36:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:36:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:36:32,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:36:32,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39024053] [2023-11-29 00:36:32,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:36:32,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:36:32,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:36:32,231 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:36:32,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-11-29 00:36:32,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:36:32,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:36:32,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:36:32,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:36:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14700 backedges. 0 proven. 10568 refuted. 0 times theorem prover too weak. 4132 trivial. 0 not checked. [2023-11-29 00:36:34,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:36:34,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:36:34,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094589453] [2023-11-29 00:36:34,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:36:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39024053] [2023-11-29 00:36:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39024053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:36:34,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:36:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-29 00:36:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005797195] [2023-11-29 00:36:34,125 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:36:34,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:36:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:36:34,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:36:34,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:36:34,127 INFO L87 Difference]: Start difference. First operand 236461 states and 266041 transitions. Second operand has 16 states, 15 states have (on average 15.066666666666666) internal successors, (226), 16 states have internal predecessors, (226), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 00:36:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:36:58,346 INFO L93 Difference]: Finished difference Result 236462 states and 266041 transitions. [2023-11-29 00:36:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:36:58,347 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 15.066666666666666) internal successors, (226), 16 states have internal predecessors, (226), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 815 [2023-11-29 00:36:58,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:36:58,643 INFO L225 Difference]: With dead ends: 236462 [2023-11-29 00:36:58,643 INFO L226 Difference]: Without dead ends: 236461 [2023-11-29 00:36:58,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:36:58,671 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:36:58,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 442 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:36:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236461 states. [2023-11-29 00:37:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236461 to 236461. [2023-11-29 00:37:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236461 states, 221802 states have (on average 1.067321304586974) internal successors, (236734), 221805 states have internal predecessors, (236734), 14653 states have call successors, (14653), 2 states have call predecessors, (14653), 2 states have return successors, (14653), 14653 states have call predecessors, (14653), 14653 states have call successors, (14653) [2023-11-29 00:37:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236461 states to 236461 states and 266040 transitions. [2023-11-29 00:37:25,083 INFO L78 Accepts]: Start accepts. Automaton has 236461 states and 266040 transitions. Word has length 815 [2023-11-29 00:37:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:37:25,083 INFO L495 AbstractCegarLoop]: Abstraction has 236461 states and 266040 transitions. [2023-11-29 00:37:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 15.066666666666666) internal successors, (226), 16 states have internal predecessors, (226), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 00:37:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 236461 states and 266040 transitions. [2023-11-29 00:37:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2023-11-29 00:37:25,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:37:25,113 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 35, 35, 35, 35, 35, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:37:25,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2023-11-29 00:37:25,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-29 00:37:25,313 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:37:25,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:37:25,314 INFO L85 PathProgramCache]: Analyzing trace with hash 106426609, now seen corresponding path program 33 times [2023-11-29 00:37:25,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:37:25,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266514355] [2023-11-29 00:37:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:37:25,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:37:25,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:37:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298520836] [2023-11-29 00:37:25,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:37:25,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:37:25,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:37:25,337 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:37:25,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-11-29 00:37:25,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 00:37:25,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:37:25,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 00:37:25,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:37:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16370 backedges. 3684 proven. 281 refuted. 0 times theorem prover too weak. 12405 trivial. 0 not checked. [2023-11-29 00:37:35,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:37:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:37:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266514355] [2023-11-29 00:37:36,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:37:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298520836] [2023-11-29 00:37:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298520836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:37:36,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:37:36,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2023-11-29 00:37:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301739565] [2023-11-29 00:37:36,489 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:37:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 00:37:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:37:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 00:37:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=709, Unknown=5, NotChecked=0, Total=812 [2023-11-29 00:37:36,491 INFO L87 Difference]: Start difference. First operand 236461 states and 266040 transitions. Second operand has 25 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 00:37:39,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:37:42,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:37:52,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 00:38:21,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:38:21,275 INFO L93 Difference]: Finished difference Result 239760 states and 269572 transitions. [2023-11-29 00:38:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 00:38:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) Word has length 855 [2023-11-29 00:38:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:38:21,587 INFO L225 Difference]: With dead ends: 239760 [2023-11-29 00:38:21,587 INFO L226 Difference]: Without dead ends: 235346 [2023-11-29 00:38:21,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=425, Invalid=3352, Unknown=5, NotChecked=0, Total=3782 [2023-11-29 00:38:21,612 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 207 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 22 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:38:21,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 287 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3160 Invalid, 6 Unknown, 0 Unchecked, 16.4s Time] [2023-11-29 00:38:21,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235346 states. [2023-11-29 00:38:47,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235346 to 228844. [2023-11-29 00:38:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228844 states, 214661 states have (on average 1.067245563935694) internal successors, (229096), 214664 states have internal predecessors, (229096), 14177 states have call successors, (14177), 2 states have call predecessors, (14177), 2 states have return successors, (14177), 14177 states have call predecessors, (14177), 14177 states have call successors, (14177) [2023-11-29 00:38:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228844 states to 228844 states and 257450 transitions. [2023-11-29 00:38:48,310 INFO L78 Accepts]: Start accepts. Automaton has 228844 states and 257450 transitions. Word has length 855 [2023-11-29 00:38:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:38:48,311 INFO L495 AbstractCegarLoop]: Abstraction has 228844 states and 257450 transitions. [2023-11-29 00:38:48,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-29 00:38:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 228844 states and 257450 transitions. [2023-11-29 00:38:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2023-11-29 00:38:48,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:38:48,553 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 28, 28, 28, 28, 28, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:38:48,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2023-11-29 00:38:48,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-11-29 00:38:48,753 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:38:48,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:38:48,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1244163465, now seen corresponding path program 34 times [2023-11-29 00:38:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:38:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989158538] [2023-11-29 00:38:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:38:48,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:38:48,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:38:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569833418] [2023-11-29 00:38:48,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:38:48,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:38:48,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:38:48,776 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:38:48,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-11-29 00:38:49,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:38:49,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:38:49,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 00:38:49,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:38:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15782 backedges. 0 proven. 11814 refuted. 0 times theorem prover too weak. 3968 trivial. 0 not checked. [2023-11-29 00:38:50,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:38:50,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:38:50,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989158538] [2023-11-29 00:38:50,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:38:50,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569833418] [2023-11-29 00:38:50,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569833418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:38:50,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:38:50,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 00:38:50,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627240419] [2023-11-29 00:38:50,847 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 00:38:50,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:38:50,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:38:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:38:50,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:38:50,849 INFO L87 Difference]: Start difference. First operand 228844 states and 257450 transitions. Second operand has 20 states, 19 states have (on average 16.63157894736842) internal successors, (316), 20 states have internal predecessors, (316), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:39:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:39:15,153 INFO L93 Difference]: Finished difference Result 228845 states and 257450 transitions. [2023-11-29 00:39:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:39:15,154 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 16.63157894736842) internal successors, (316), 20 states have internal predecessors, (316), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 855 [2023-11-29 00:39:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:39:15,435 INFO L225 Difference]: With dead ends: 228845 [2023-11-29 00:39:15,435 INFO L226 Difference]: Without dead ends: 228844 [2023-11-29 00:39:15,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:39:15,461 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:39:15,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 379 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:39:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228844 states. [2023-11-29 00:39:41,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228844 to 228844. [2023-11-29 00:39:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228844 states, 214661 states have (on average 1.0672409054276277) internal successors, (229095), 214664 states have internal predecessors, (229095), 14177 states have call successors, (14177), 2 states have call predecessors, (14177), 2 states have return successors, (14177), 14177 states have call predecessors, (14177), 14177 states have call successors, (14177) [2023-11-29 00:39:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228844 states to 228844 states and 257449 transitions. [2023-11-29 00:39:42,233 INFO L78 Accepts]: Start accepts. Automaton has 228844 states and 257449 transitions. Word has length 855 [2023-11-29 00:39:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:39:42,234 INFO L495 AbstractCegarLoop]: Abstraction has 228844 states and 257449 transitions. [2023-11-29 00:39:42,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 16.63157894736842) internal successors, (316), 20 states have internal predecessors, (316), 17 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-29 00:39:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 228844 states and 257449 transitions. [2023-11-29 00:39:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2023-11-29 00:39:42,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:39:42,273 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 41, 41, 41, 41, 41, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:39:42,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-11-29 00:39:42,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-11-29 00:39:42,473 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:39:42,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:39:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1985428199, now seen corresponding path program 35 times [2023-11-29 00:39:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:39:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591021112] [2023-11-29 00:39:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:39:42,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:39:42,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:39:42,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016802557] [2023-11-29 00:39:42,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:39:42,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:39:42,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:39:42,498 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:39:42,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-11-29 00:39:43,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2023-11-29 00:39:43,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:39:43,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 00:39:43,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:39:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 10134 proven. 4872 refuted. 0 times theorem prover too weak. 3558 trivial. 0 not checked. [2023-11-29 00:39:44,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:39:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18564 backedges. 8454 proven. 4872 refuted. 0 times theorem prover too weak. 5238 trivial. 0 not checked. [2023-11-29 00:39:44,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:39:44,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591021112] [2023-11-29 00:39:44,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:39:44,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016802557] [2023-11-29 00:39:44,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016802557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:39:44,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:39:44,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 49 [2023-11-29 00:39:44,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582312872] [2023-11-29 00:39:44,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:39:44,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 00:39:44,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:39:44,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 00:39:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1792, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 00:39:44,954 INFO L87 Difference]: Start difference. First operand 228844 states and 257449 transitions. Second operand has 49 states, 49 states have (on average 14.387755102040817) internal successors, (705), 49 states have internal predecessors, (705), 47 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:40:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:40:20,567 INFO L93 Difference]: Finished difference Result 419964 states and 479443 transitions. [2023-11-29 00:40:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 00:40:20,568 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 14.387755102040817) internal successors, (705), 49 states have internal predecessors, (705), 47 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) Word has length 895 [2023-11-29 00:40:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:40:21,173 INFO L225 Difference]: With dead ends: 419964 [2023-11-29 00:40:21,173 INFO L226 Difference]: Without dead ends: 343917 [2023-11-29 00:40:21,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1820 GetRequests, 1726 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1337, Invalid=5143, Unknown=0, NotChecked=0, Total=6480 [2023-11-29 00:40:21,248 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 514 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 3791 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:40:21,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1970 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3791 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 00:40:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343917 states. [2023-11-29 00:40:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343917 to 263605. [2023-11-29 00:40:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263605 states, 247247 states have (on average 1.0662495399337504) internal successors, (263627), 247250 states have internal predecessors, (263627), 16352 states have call successors, (16352), 2 states have call predecessors, (16352), 2 states have return successors, (16352), 16352 states have call predecessors, (16352), 16352 states have call successors, (16352) [2023-11-29 00:40:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263605 states to 263605 states and 296331 transitions. [2023-11-29 00:40:51,235 INFO L78 Accepts]: Start accepts. Automaton has 263605 states and 296331 transitions. Word has length 895 [2023-11-29 00:40:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:40:51,235 INFO L495 AbstractCegarLoop]: Abstraction has 263605 states and 296331 transitions. [2023-11-29 00:40:51,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 14.387755102040817) internal successors, (705), 49 states have internal predecessors, (705), 47 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 00:40:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 263605 states and 296331 transitions. [2023-11-29 00:40:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2023-11-29 00:40:51,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:40:51,508 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 33, 33, 33, 33, 33, 11, 11, 11, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:40:51,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-11-29 00:40:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-11-29 00:40:51,708 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 00:40:51,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:40:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1775503159, now seen corresponding path program 36 times [2023-11-29 00:40:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:40:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982403637] [2023-11-29 00:40:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:40:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:40:51,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:40:51,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413853109] [2023-11-29 00:40:51,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:40:51,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:40:51,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:40:51,733 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:40:51,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab9c4dba-b3f3-4bf6-90dd-ef9a47d60a41/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-11-29 00:40:52,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2023-11-29 00:40:52,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:40:52,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 145 conjunts are in the unsatisfiable core [2023-11-29 00:40:52,622 INFO L285 TraceCheckSpWp]: Computing forward predicates...