./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/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_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/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_b96ba574-facd-462f-9a8d-a76bdf493969/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 7533b3d7f0eee80e44aab8f7ead88d0e8fea1ae56bf86b66a98a6784801a4e45 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:57:21,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:57:21,501 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:57:21,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:57:21,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:57:21,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:57:21,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:57:21,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:57:21,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:57:21,536 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:57:21,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:57:21,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:57:21,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:57:21,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:57:21,539 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:57:21,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:57:21,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:57:21,541 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:57:21,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:57:21,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:57:21,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:57:21,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:57:21,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:57:21,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:57:21,545 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:57:21,545 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:57:21,545 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:57:21,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:57:21,546 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:57:21,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:57:21,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:57:21,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:57:21,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:57:21,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:57:21,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:57:21,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:57:21,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:57:21,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:57:21,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:57:21,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:57:21,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:57:21,550 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:57:21,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:57:21,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:57:21,551 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_b96ba574-facd-462f-9a8d-a76bdf493969/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7533b3d7f0eee80e44aab8f7ead88d0e8fea1ae56bf86b66a98a6784801a4e45 [2023-11-29 02:57:21,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:57:21,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:57:21,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:57:21,819 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:57:21,819 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:57:21,821 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c [2023-11-29 02:57:24,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:57:24,831 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:57:24,832 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c [2023-11-29 02:57:24,839 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/data/eeacab6d1/b7808a4562254ee9a315251653f4bdc7/FLAGec478e331 [2023-11-29 02:57:24,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/data/eeacab6d1/b7808a4562254ee9a315251653f4bdc7 [2023-11-29 02:57:24,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:57:24,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:57:24,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:57:24,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:57:24,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:57:24,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:57:24" (1/1) ... [2023-11-29 02:57:24,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23afbc42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:24, skipping insertion in model container [2023-11-29 02:57:24,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:57:24" (1/1) ... [2023-11-29 02:57:24,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:57:25,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:57:25,055 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:57:25,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:57:25,088 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:57:25,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25 WrapperNode [2023-11-29 02:57:25,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:57:25,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:57:25,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:57:25,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:57:25,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,124 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-11-29 02:57:25,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:57:25,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:57:25,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:57:25,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:57:25,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,138 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,150 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 02:57:25,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:57:25,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:57:25,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:57:25,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:57:25,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (1/1) ... [2023-11-29 02:57:25,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:57:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:25,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:25,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:57:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:57:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:57:25,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:57:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:57:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:57:25,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:57:25,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 02:57:25,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 02:57:25,275 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:57:25,277 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:57:25,466 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:57:25,491 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:57:25,491 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:57:25,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:57:25 BoogieIcfgContainer [2023-11-29 02:57:25,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:57:25,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:57:25,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:57:25,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:57:25,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:57:24" (1/3) ... [2023-11-29 02:57:25,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ad376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:57:25, skipping insertion in model container [2023-11-29 02:57:25,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:25" (2/3) ... [2023-11-29 02:57:25,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ad376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:57:25, skipping insertion in model container [2023-11-29 02:57:25,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:57:25" (3/3) ... [2023-11-29 02:57:25,501 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound50.c [2023-11-29 02:57:25,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:57:25,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-29 02:57:25,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:57:25,564 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;@21b6e578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:57:25,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-29 02:57:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 60 states have internal predecessors, (65), 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 02:57:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 02:57:25,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:25,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:25,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:25,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash 321259115, now seen corresponding path program 1 times [2023-11-29 02:57:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:25,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032099401] [2023-11-29 02:57:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:25,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:25,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032099401] [2023-11-29 02:57:25,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:57:25,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713953893] [2023-11-29 02:57:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:25,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:25,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:25,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:25,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:57:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:25,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:57:25,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:57:25,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713953893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:25,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:25,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:57:25,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147029909] [2023-11-29 02:57:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:57:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:25,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:57:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:57:25,879 INFO L87 Difference]: Start difference. First operand has 69 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 60 states have internal predecessors, (65), 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:57:25,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:25,910 INFO L93 Difference]: Finished difference Result 136 states and 157 transitions. [2023-11-29 02:57:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:57:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-11-29 02:57:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:25,918 INFO L225 Difference]: With dead ends: 136 [2023-11-29 02:57:25,918 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 02:57:25,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 02:57:25,925 INFO L413 NwaCegarLoop]: 71 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, 71 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 02:57:25,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:57:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 02:57:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-29 02:57:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 58 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 02:57:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2023-11-29 02:57:25,964 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 25 [2023-11-29 02:57:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:25,965 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2023-11-29 02:57:25,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:57:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2023-11-29 02:57:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 02:57:25,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:25,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:25,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:57:26,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:57:26,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:26,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash 277368359, now seen corresponding path program 1 times [2023-11-29 02:57:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:26,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685743427] [2023-11-29 02:57:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:26,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:26,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576683274] [2023-11-29 02:57:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:26,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:26,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:26,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:26,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:57:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:26,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:57:26,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:26,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:26,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:26,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685743427] [2023-11-29 02:57:26,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:26,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576683274] [2023-11-29 02:57:26,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576683274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:26,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:57:26,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 02:57:26,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217707282] [2023-11-29 02:57:26,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:26,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:57:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:57:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:26,440 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 02:57:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:26,697 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2023-11-29 02:57:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:57:26,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 25 [2023-11-29 02:57:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:26,699 INFO L225 Difference]: With dead ends: 113 [2023-11-29 02:57:26,699 INFO L226 Difference]: Without dead ends: 106 [2023-11-29 02:57:26,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:57:26,701 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 251 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:26,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 78 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:57:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-29 02:57:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87. [2023-11-29 02:57:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 78 states have internal predecessors, (94), 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 02:57:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2023-11-29 02:57:26,715 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 25 [2023-11-29 02:57:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:26,716 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2023-11-29 02:57:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 02:57:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2023-11-29 02:57:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 02:57:26,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:26,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:26,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:57:26,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:26,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:26,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:26,922 INFO L85 PathProgramCache]: Analyzing trace with hash 8484588, now seen corresponding path program 1 times [2023-11-29 02:57:26,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:26,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227312525] [2023-11-29 02:57:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:26,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:26,939 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:26,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962953498] [2023-11-29 02:57:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:26,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:26,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:26,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:26,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:57:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:26,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:57:26,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:27,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227312525] [2023-11-29 02:57:27,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962953498] [2023-11-29 02:57:27,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962953498] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:27,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:57:27,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 02:57:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734278364] [2023-11-29 02:57:27,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:27,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:57:27,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:57:27,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:27,159 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 02:57:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:27,456 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2023-11-29 02:57:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:57:27,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 26 [2023-11-29 02:57:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:27,458 INFO L225 Difference]: With dead ends: 106 [2023-11-29 02:57:27,459 INFO L226 Difference]: Without dead ends: 100 [2023-11-29 02:57:27,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:57:27,460 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 177 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:27,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 102 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:57:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-29 02:57:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 86. [2023-11-29 02:57:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 77 states have internal predecessors, (87), 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 02:57:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2023-11-29 02:57:27,474 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 26 [2023-11-29 02:57:27,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:27,474 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2023-11-29 02:57:27,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 02:57:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2023-11-29 02:57:27,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 02:57:27,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:27,476 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:27,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:57:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:27,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:27,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -638656661, now seen corresponding path program 1 times [2023-11-29 02:57:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:27,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079838404] [2023-11-29 02:57:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:27,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86672360] [2023-11-29 02:57:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:27,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:27,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:27,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:27,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:57:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:27,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:57:27,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:27,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:27,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079838404] [2023-11-29 02:57:27,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86672360] [2023-11-29 02:57:27,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86672360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:27,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:27,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:57:27,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242129603] [2023-11-29 02:57:27,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:27,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:57:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:27,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:57:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:57:27,811 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:57:27,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:27,919 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2023-11-29 02:57:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:57:27,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-11-29 02:57:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:27,921 INFO L225 Difference]: With dead ends: 92 [2023-11-29 02:57:27,921 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 02:57:27,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:57:27,922 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 81 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:27,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 58 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:57:27,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 02:57:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2023-11-29 02:57:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 77 states have internal predecessors, (85), 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 02:57:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2023-11-29 02:57:27,934 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 29 [2023-11-29 02:57:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:27,934 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2023-11-29 02:57:27,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:57:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2023-11-29 02:57:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 02:57:27,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:27,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:27,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:57:28,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:28,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:28,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1676480048, now seen corresponding path program 1 times [2023-11-29 02:57:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:28,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373492079] [2023-11-29 02:57:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:28,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:28,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90290938] [2023-11-29 02:57:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:28,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:28,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:28,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:28,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:57:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:28,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:57:28,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:28,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373492079] [2023-11-29 02:57:28,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90290938] [2023-11-29 02:57:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90290938] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:28,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:57:28,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 02:57:28,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421367858] [2023-11-29 02:57:28,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:28,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:28,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:28,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:28,414 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:57:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:28,486 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2023-11-29 02:57:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:28,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-11-29 02:57:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:28,487 INFO L225 Difference]: With dead ends: 87 [2023-11-29 02:57:28,487 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 02:57:28,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:28,489 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:28,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 75 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:57:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 02:57:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-29 02:57:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 77 states have internal predecessors, (84), 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 02:57:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2023-11-29 02:57:28,500 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 30 [2023-11-29 02:57:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:28,500 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2023-11-29 02:57:28,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:57:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2023-11-29 02:57:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 02:57:28,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:28,502 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:28,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:57:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:28,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:28,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash 484592082, now seen corresponding path program 1 times [2023-11-29 02:57:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944366462] [2023-11-29 02:57:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:28,718 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:28,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664136136] [2023-11-29 02:57:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:28,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:28,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:28,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:28,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:57:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:28,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:57:28,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:28,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:28,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944366462] [2023-11-29 02:57:28,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664136136] [2023-11-29 02:57:28,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664136136] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:28,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:57:28,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 02:57:28,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093225811] [2023-11-29 02:57:28,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:28,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:28,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:28,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:28,997 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:57:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:29,084 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2023-11-29 02:57:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:29,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2023-11-29 02:57:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:29,086 INFO L225 Difference]: With dead ends: 87 [2023-11-29 02:57:29,086 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 02:57:29,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:29,087 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:29,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 60 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:57:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 02:57:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-29 02:57:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 61 states have (on average 1.360655737704918) internal successors, (83), 77 states have internal predecessors, (83), 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 02:57:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2023-11-29 02:57:29,097 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 32 [2023-11-29 02:57:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:29,098 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2023-11-29 02:57:29,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 02:57:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2023-11-29 02:57:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 02:57:29,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:29,099 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:29,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:57:29,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:57:29,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:29,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1038970995, now seen corresponding path program 1 times [2023-11-29 02:57:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:29,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934324493] [2023-11-29 02:57:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:29,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:29,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751975762] [2023-11-29 02:57:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:29,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:29,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:29,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:29,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:57:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:29,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:57:29,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:29,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:29,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934324493] [2023-11-29 02:57:29,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751975762] [2023-11-29 02:57:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751975762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:29,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:29,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:57:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442785197] [2023-11-29 02:57:29,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:29,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:57:29,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:29,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:57:29,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:57:29,389 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:29,402 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2023-11-29 02:57:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:57:29,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-29 02:57:29,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:29,407 INFO L225 Difference]: With dead ends: 86 [2023-11-29 02:57:29,407 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 02:57:29,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:57:29,409 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 31 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:29,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 71 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:57:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 02:57:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-29 02:57:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 76 states have internal predecessors, (81), 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 02:57:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2023-11-29 02:57:29,419 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 39 [2023-11-29 02:57:29,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:29,419 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2023-11-29 02:57:29,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2023-11-29 02:57:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 02:57:29,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:29,421 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:29,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:57:29,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:57:29,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:29,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2143329700, now seen corresponding path program 1 times [2023-11-29 02:57:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578655133] [2023-11-29 02:57:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:29,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:29,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619384464] [2023-11-29 02:57:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:29,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:29,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:29,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:57:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:29,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:57:29,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:29,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:29,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578655133] [2023-11-29 02:57:29,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:29,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619384464] [2023-11-29 02:57:29,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619384464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:29,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:29,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:57:29,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829163951] [2023-11-29 02:57:29,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:29,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:57:29,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:57:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:57:29,713 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:29,733 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2023-11-29 02:57:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:57:29,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-11-29 02:57:29,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:29,735 INFO L225 Difference]: With dead ends: 92 [2023-11-29 02:57:29,735 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 02:57:29,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:57:29,736 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:29,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 110 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:57:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 02:57:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2023-11-29 02:57:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 76 states have internal predecessors, (80), 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 02:57:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-11-29 02:57:29,745 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 40 [2023-11-29 02:57:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:29,745 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-11-29 02:57:29,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-11-29 02:57:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 02:57:29,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:29,747 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:29,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:57:29,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:29,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:29,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1789288382, now seen corresponding path program 1 times [2023-11-29 02:57:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:29,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986255506] [2023-11-29 02:57:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:29,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:29,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805470920] [2023-11-29 02:57:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:29,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:29,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:29,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:29,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:57:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:30,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:57:30,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:32,584 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_57| Int) (|ULTIMATE.start_main_~z~0#1| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~x~0#1_57| |ULTIMATE.start_main_~z~0#1|))) (and (<= (+ |v_ULTIMATE.start_main_~x~0#1_57| |c_ULTIMATE.start_main_~x~0#1|) .cse0) (<= 1 |v_ULTIMATE.start_main_~x~0#1_57|) (<= .cse0 9223372036854775807)))) is different from true [2023-11-29 02:57:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:32,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986255506] [2023-11-29 02:57:32,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805470920] [2023-11-29 02:57:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805470920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:32,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:32,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:57:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026888952] [2023-11-29 02:57:32,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:32,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:57:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:32,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:57:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-11-29 02:57:32,601 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:32,657 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2023-11-29 02:57:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:57:32,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2023-11-29 02:57:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:32,658 INFO L225 Difference]: With dead ends: 87 [2023-11-29 02:57:32,658 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 02:57:32,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-11-29 02:57:32,659 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:32,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 74 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 90 Unchecked, 0.0s Time] [2023-11-29 02:57:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 02:57:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-29 02:57:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 77 states have internal predecessors, (81), 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 02:57:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2023-11-29 02:57:32,666 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 44 [2023-11-29 02:57:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:32,666 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2023-11-29 02:57:32,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2023-11-29 02:57:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 02:57:32,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:32,668 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:32,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:57:32,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:32,868 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:32,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash -366634904, now seen corresponding path program 1 times [2023-11-29 02:57:32,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:32,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988985336] [2023-11-29 02:57:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:32,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:32,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:32,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185225309] [2023-11-29 02:57:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:32,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:32,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:32,881 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:32,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:57:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:32,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:57:32,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:32,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:33,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:33,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988985336] [2023-11-29 02:57:33,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:33,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185225309] [2023-11-29 02:57:33,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185225309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:33,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:33,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:57:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737477795] [2023-11-29 02:57:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:33,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:33,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:33,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:33,002 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:37,237 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 02:57:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:37,526 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2023-11-29 02:57:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:37,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2023-11-29 02:57:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:37,528 INFO L225 Difference]: With dead ends: 86 [2023-11-29 02:57:37,528 INFO L226 Difference]: Without dead ends: 84 [2023-11-29 02:57:37,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:37,529 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:37,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 71 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 02:57:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-29 02:57:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-29 02:57:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 75 states have internal predecessors, (79), 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 02:57:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2023-11-29 02:57:37,534 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 45 [2023-11-29 02:57:37,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:37,534 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2023-11-29 02:57:37,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2023-11-29 02:57:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 02:57:37,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:37,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:37,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:57:37,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:57:37,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:37,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1420767949, now seen corresponding path program 1 times [2023-11-29 02:57:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:37,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759711589] [2023-11-29 02:57:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:37,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:37,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968359305] [2023-11-29 02:57:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:37,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:37,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:37,760 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:37,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:57:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:37,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:57:37,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 02:57:37,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:38,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:38,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759711589] [2023-11-29 02:57:38,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:38,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968359305] [2023-11-29 02:57:38,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968359305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:38,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:57:38,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 02:57:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283601790] [2023-11-29 02:57:38,073 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:38,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:57:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:57:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:38,074 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 02:57:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:38,276 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2023-11-29 02:57:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:57:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 45 [2023-11-29 02:57:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:38,277 INFO L225 Difference]: With dead ends: 84 [2023-11-29 02:57:38,277 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 02:57:38,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:57:38,278 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:38,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 75 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:57:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 02:57:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 02:57:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 74 states have internal predecessors, (77), 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 02:57:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2023-11-29 02:57:38,285 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 45 [2023-11-29 02:57:38,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:38,285 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2023-11-29 02:57:38,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 02:57:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2023-11-29 02:57:38,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 02:57:38,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:38,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:38,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:57:38,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:57:38,488 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:38,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1519219968, now seen corresponding path program 1 times [2023-11-29 02:57:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:38,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564319372] [2023-11-29 02:57:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:38,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:38,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24117299] [2023-11-29 02:57:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:38,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:38,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:38,499 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:38,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:57:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:38,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:57:38,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:38,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:38,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:38,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564319372] [2023-11-29 02:57:38,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:38,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24117299] [2023-11-29 02:57:38,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24117299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:38,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:38,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:57:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721903585] [2023-11-29 02:57:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:38,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:38,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:38,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:38,617 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:39,197 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2023-11-29 02:57:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:57:39,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2023-11-29 02:57:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:39,198 INFO L225 Difference]: With dead ends: 83 [2023-11-29 02:57:39,198 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 02:57:39,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 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 02:57:39,199 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:39,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 72 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:57:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 02:57:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-29 02:57:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 65 states have internal predecessors, (67), 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 02:57:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2023-11-29 02:57:39,204 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 46 [2023-11-29 02:57:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:39,204 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2023-11-29 02:57:39,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:57:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2023-11-29 02:57:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 02:57:39,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:39,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:39,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:57:39,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:57:39,405 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:39,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1094133374, now seen corresponding path program 1 times [2023-11-29 02:57:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943849186] [2023-11-29 02:57:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:39,416 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:39,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222612874] [2023-11-29 02:57:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:39,418 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:39,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:57:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:39,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:57:39,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 02:57:39,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:39,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943849186] [2023-11-29 02:57:39,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222612874] [2023-11-29 02:57:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222612874] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:39,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:57:39,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-29 02:57:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412258384] [2023-11-29 02:57:39,754 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:39,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:57:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:57:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:57:39,755 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 02:57:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:39,940 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2023-11-29 02:57:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:57:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 46 [2023-11-29 02:57:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:39,941 INFO L225 Difference]: With dead ends: 75 [2023-11-29 02:57:39,941 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 02:57:39,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:57:39,942 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 76 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:39,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 71 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:57:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 02:57:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-29 02:57:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 65 states have internal predecessors, (66), 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 02:57:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2023-11-29 02:57:39,949 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 46 [2023-11-29 02:57:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:39,949 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2023-11-29 02:57:39,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 02:57:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2023-11-29 02:57:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 02:57:39,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:39,951 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:39,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:57:40,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:57:40,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:40,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:40,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1784292529, now seen corresponding path program 1 times [2023-11-29 02:57:40,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:40,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589873210] [2023-11-29 02:57:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:40,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:40,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888231506] [2023-11-29 02:57:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:40,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:40,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:40,167 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:40,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:57:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:40,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:57:40,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:40,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:41,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:41,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589873210] [2023-11-29 02:57:41,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:41,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888231506] [2023-11-29 02:57:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888231506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:41,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:57:41,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 02:57:41,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439484829] [2023-11-29 02:57:41,711 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:41,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:57:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:41,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:57:41,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:57:41,712 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 02:57:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:43,653 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2023-11-29 02:57:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:57:43,653 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), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2023-11-29 02:57:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:43,654 INFO L225 Difference]: With dead ends: 74 [2023-11-29 02:57:43,654 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 02:57:43,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:57:43,655 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 62 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:43,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 127 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:57:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 02:57:43,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-29 02:57:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 60 states have internal predecessors, (61), 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 02:57:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2023-11-29 02:57:43,661 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 51 [2023-11-29 02:57:43,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:43,661 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2023-11-29 02:57:43,661 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), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 02:57:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2023-11-29 02:57:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 02:57:43,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:43,662 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:43,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:57:43,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:57:43,862 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:43,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash -521506392, now seen corresponding path program 1 times [2023-11-29 02:57:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560318163] [2023-11-29 02:57:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:43,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:43,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:43,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063901028] [2023-11-29 02:57:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:43,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:43,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:43,871 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:43,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:57:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:43,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:57:43,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:57:44,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:57:44,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:44,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560318163] [2023-11-29 02:57:44,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:44,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063901028] [2023-11-29 02:57:44,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063901028] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:57:44,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:57:44,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-29 02:57:44,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758878323] [2023-11-29 02:57:44,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:44,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:57:44,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:44,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:57:44,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:57:44,389 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 02:57:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:44,875 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2023-11-29 02:57:44,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:57:44,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2023-11-29 02:57:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:44,876 INFO L225 Difference]: With dead ends: 69 [2023-11-29 02:57:44,876 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 02:57:44,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:57:44,877 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:44,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 99 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:57:44,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 02:57:44,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-29 02:57:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 59 states have internal predecessors, (60), 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 02:57:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-11-29 02:57:44,884 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 52 [2023-11-29 02:57:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:44,884 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-11-29 02:57:44,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 02:57:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-11-29 02:57:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 02:57:44,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:44,885 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:44,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:57:45,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:57:45,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:45,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 67696639, now seen corresponding path program 1 times [2023-11-29 02:57:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764586684] [2023-11-29 02:57:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:45,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:45,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:45,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143121578] [2023-11-29 02:57:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:45,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:45,103 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:45,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:57:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:45,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:57:45,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 02:57:45,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:57:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 02:57:45,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:45,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764586684] [2023-11-29 02:57:45,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:45,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143121578] [2023-11-29 02:57:45,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143121578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:57:45,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:57:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 02:57:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531083788] [2023-11-29 02:57:45,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:57:45,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:57:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:57:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:57:45,229 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 02:57:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:45,265 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2023-11-29 02:57:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:57:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 63 [2023-11-29 02:57:45,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:45,267 INFO L225 Difference]: With dead ends: 147 [2023-11-29 02:57:45,267 INFO L226 Difference]: Without dead ends: 146 [2023-11-29 02:57:45,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 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 02:57:45,268 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 44 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:45,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 193 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:57:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-29 02:57:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 116. [2023-11-29 02:57:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 104 states have internal predecessors, (114), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:57:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2023-11-29 02:57:45,276 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 63 [2023-11-29 02:57:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:45,276 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2023-11-29 02:57:45,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 5 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 02:57:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2023-11-29 02:57:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 02:57:45,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:45,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:45,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:57:45,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:57:45,477 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:45,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1923108637, now seen corresponding path program 1 times [2023-11-29 02:57:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:45,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774975982] [2023-11-29 02:57:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:45,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:45,485 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:45,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059285633] [2023-11-29 02:57:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:45,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:45,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:45,486 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:45,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:57:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:45,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:57:45,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 02:57:45,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:45,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774975982] [2023-11-29 02:57:45,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059285633] [2023-11-29 02:57:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059285633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:45,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:57:45,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612855080] [2023-11-29 02:57:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:45,623 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 02:57:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:46,138 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2023-11-29 02:57:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:57:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2023-11-29 02:57:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:46,140 INFO L225 Difference]: With dead ends: 116 [2023-11-29 02:57:46,140 INFO L226 Difference]: Without dead ends: 115 [2023-11-29 02:57:46,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:57:46,141 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:46,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 70 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:57:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-29 02:57:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-29 02:57:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 103 states have internal predecessors, (113), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:57:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2023-11-29 02:57:46,150 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 66 [2023-11-29 02:57:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:46,150 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2023-11-29 02:57:46,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 02:57:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2023-11-29 02:57:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 02:57:46,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:46,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:57:46,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:57:46,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:57:46,351 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:57:46,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:46,352 INFO L85 PathProgramCache]: Analyzing trace with hash 513174497, now seen corresponding path program 1 times [2023-11-29 02:57:46,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:57:46,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105040702] [2023-11-29 02:57:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:57:46,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:57:46,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253649251] [2023-11-29 02:57:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:46,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:46,360 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:57:46,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:57:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:46,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:57:46,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 02:57:49,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:57:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105040702] [2023-11-29 02:57:49,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:57:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253649251] [2023-11-29 02:57:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253649251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:49,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:49,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:57:49,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199706684] [2023-11-29 02:57:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:49,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:57:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:57:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:57:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:57:49,252 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 02:57:52,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:01,343 WARN L539 Checker$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 02:58:05,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:09,368 WARN L539 Checker$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 02:58:14,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:16,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:20,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:25,092 WARN L539 Checker$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 02:58:29,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:33,183 WARN L539 Checker$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 02:58:34,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:38,805 WARN L539 Checker$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 02:58:43,936 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 02:58:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:58:44,227 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2023-11-29 02:58:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:58:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2023-11-29 02:58:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:58:44,228 INFO L225 Difference]: With dead ends: 115 [2023-11-29 02:58:44,229 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 02:58:44,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2023-11-29 02:58:44,229 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:58:44,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 143 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 10 Unknown, 0 Unchecked, 50.8s Time] [2023-11-29 02:58:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 02:58:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-29 02:58:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.10752688172043) internal successors, (103), 96 states have internal predecessors, (103), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:58:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2023-11-29 02:58:44,238 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 67 [2023-11-29 02:58:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:58:44,238 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2023-11-29 02:58:44,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 02:58:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2023-11-29 02:58:44,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 02:58:44,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:58:44,239 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:58:44,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:58:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:58:44,440 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:58:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:58:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1726096195, now seen corresponding path program 1 times [2023-11-29 02:58:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:58:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697862722] [2023-11-29 02:58:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:58:44,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:58:44,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966647411] [2023-11-29 02:58:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:44,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:58:44,451 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:58:44,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:58:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:58:44,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:58:44,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:58:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:58:44,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:58:45,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:58:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697862722] [2023-11-29 02:58:45,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:58:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966647411] [2023-11-29 02:58:45,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966647411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:58:45,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:58:45,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 02:58:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203661422] [2023-11-29 02:58:45,125 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:58:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:58:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:58:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:58:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:58:45,126 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 02:58:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:58:45,463 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2023-11-29 02:58:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:58:45,465 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 67 [2023-11-29 02:58:45,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:58:45,466 INFO L225 Difference]: With dead ends: 109 [2023-11-29 02:58:45,466 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 02:58:45,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:58:45,467 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:58:45,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 91 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:58:45,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 02:58:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-29 02:58:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.096774193548387) internal successors, (102), 96 states have internal predecessors, (102), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:58:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2023-11-29 02:58:45,480 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 67 [2023-11-29 02:58:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:58:45,480 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2023-11-29 02:58:45,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 02:58:45,480 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2023-11-29 02:58:45,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 02:58:45,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:58:45,481 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:58:45,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 02:58:45,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:45,682 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:58:45,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:58:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash 921069797, now seen corresponding path program 1 times [2023-11-29 02:58:45,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:58:45,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231616488] [2023-11-29 02:58:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:58:45,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:58:45,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761411575] [2023-11-29 02:58:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:45,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:45,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:58:45,693 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:58:45,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:58:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:58:45,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:58:45,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:58:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:58:45,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:58:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:58:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231616488] [2023-11-29 02:58:46,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:58:46,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761411575] [2023-11-29 02:58:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761411575] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:58:46,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:58:46,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-29 02:58:46,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326981912] [2023-11-29 02:58:46,254 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:58:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:58:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:58:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:58:46,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:58:46,255 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 02:58:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:58:46,558 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2023-11-29 02:58:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:58:46,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 69 [2023-11-29 02:58:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:58:46,560 INFO L225 Difference]: With dead ends: 109 [2023-11-29 02:58:46,560 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 02:58:46,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:58:46,560 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:58:46,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 60 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:58:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 02:58:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-29 02:58:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.086021505376344) internal successors, (101), 96 states have internal predecessors, (101), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:58:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2023-11-29 02:58:46,568 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 69 [2023-11-29 02:58:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:58:46,569 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2023-11-29 02:58:46,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 02:58:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2023-11-29 02:58:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 02:58:46,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:58:46,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1] [2023-11-29 02:58:46,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 02:58:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:46,770 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:58:46,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:58:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash -955684980, now seen corresponding path program 1 times [2023-11-29 02:58:46,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:58:46,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556070228] [2023-11-29 02:58:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:58:46,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:58:46,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638459797] [2023-11-29 02:58:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:46,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:58:46,778 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:58:46,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:58:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:58:46,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:58:46,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:58:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:58:47,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:58:47,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:58:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556070228] [2023-11-29 02:58:47,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:58:47,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638459797] [2023-11-29 02:58:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638459797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:58:47,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:58:47,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 02:58:47,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684058848] [2023-11-29 02:58:47,747 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:58:47,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:58:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:58:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:58:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:58:47,749 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 02:58:49,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:49,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:58:49,289 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2023-11-29 02:58:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:58:49,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 72 [2023-11-29 02:58:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:58:49,290 INFO L225 Difference]: With dead ends: 110 [2023-11-29 02:58:49,290 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 02:58:49,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:58:49,292 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:58:49,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 105 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:58:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 02:58:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-29 02:58:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.064516129032258) internal successors, (99), 96 states have internal predecessors, (99), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:58:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2023-11-29 02:58:49,301 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 72 [2023-11-29 02:58:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:58:49,301 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2023-11-29 02:58:49,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 5 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 02:58:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2023-11-29 02:58:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 02:58:49,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:58:49,302 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:58:49,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 02:58:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 02:58:49,503 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:58:49,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:58:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1100102178, now seen corresponding path program 2 times [2023-11-29 02:58:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:58:49,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506477138] [2023-11-29 02:58:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:58:49,512 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:58:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135377268] [2023-11-29 02:58:49,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:58:49,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:49,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:58:49,513 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:58:49,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:58:49,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:58:49,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:58:49,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 02:58:49,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:58:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 3 proven. 66 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:58:52,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:58:53,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:58:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506477138] [2023-11-29 02:58:53,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:58:53,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135377268] [2023-11-29 02:58:53,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135377268] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:58:53,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:58:53,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-29 02:58:53,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203769080] [2023-11-29 02:58:53,106 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:58:53,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 02:58:53,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:58:53,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 02:58:53,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=257, Unknown=3, NotChecked=0, Total=342 [2023-11-29 02:58:53,107 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 17 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 02:58:54,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:55,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:58,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 02:58:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:58:59,102 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2023-11-29 02:58:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:58:59,103 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 92 [2023-11-29 02:58:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:58:59,104 INFO L225 Difference]: With dead ends: 111 [2023-11-29 02:58:59,104 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 02:58:59,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=124, Invalid=425, Unknown=3, NotChecked=0, Total=552 [2023-11-29 02:58:59,105 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 88 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:58:59,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 131 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 640 Invalid, 4 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 02:58:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 02:58:59,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-11-29 02:58:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 93 states have (on average 1.053763440860215) internal successors, (98), 96 states have internal predecessors, (98), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 02:58:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2023-11-29 02:58:59,122 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 92 [2023-11-29 02:58:59,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:58:59,122 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2023-11-29 02:58:59,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 15 states have internal predecessors, (66), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 02:58:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2023-11-29 02:58:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 02:58:59,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:58:59,123 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:58:59,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 02:58:59,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:59,324 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:58:59,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:58:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1751404241, now seen corresponding path program 2 times [2023-11-29 02:58:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:58:59,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317997249] [2023-11-29 02:58:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:58:59,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:58:59,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:58:59,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903561048] [2023-11-29 02:58:59,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:58:59,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:58:59,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:58:59,334 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:58:59,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:58:59,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:58:59,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:58:59,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 02:58:59,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:59:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 75 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 02:59:00,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:59:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 9 proven. 75 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:59:04,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:59:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317997249] [2023-11-29 02:59:04,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:59:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903561048] [2023-11-29 02:59:04,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903561048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:59:04,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:59:04,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-29 02:59:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531872410] [2023-11-29 02:59:04,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:59:04,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 02:59:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:59:04,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 02:59:04,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-11-29 02:59:04,749 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 26 states, 25 states have (on average 5.4) internal successors, (135), 24 states have internal predecessors, (135), 11 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 02:59:24,878 WARN L293 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 43 DAG size of output: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:59:35,766 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 33 DAG size of output: 32 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:59:43,983 WARN L293 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 47 DAG size of output: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:59:45,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 02:59:57,531 WARN L293 SmtUtils]: Spent 5.64s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:59:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:59:57,533 INFO L93 Difference]: Finished difference Result 163 states and 178 transitions. [2023-11-29 02:59:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 02:59:57,533 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.4) internal successors, (135), 24 states have internal predecessors, (135), 11 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) Word has length 95 [2023-11-29 02:59:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:59:57,534 INFO L225 Difference]: With dead ends: 163 [2023-11-29 02:59:57,535 INFO L226 Difference]: Without dead ends: 161 [2023-11-29 02:59:57,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 02:59:57,536 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 251 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:59:57,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 365 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 02:59:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-29 02:59:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2023-11-29 02:59:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 138 states have (on average 1.0797101449275361) internal successors, (149), 141 states have internal predecessors, (149), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 02:59:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2023-11-29 02:59:57,554 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 95 [2023-11-29 02:59:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:59:57,554 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2023-11-29 02:59:57,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.4) internal successors, (135), 24 states have internal predecessors, (135), 11 states have call successors, (13), 1 states have call predecessors, (13), 3 states have return successors, (14), 10 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-29 02:59:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2023-11-29 02:59:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:59:57,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:59:57,555 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:59:57,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 02:59:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:59:57,756 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 02:59:57,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:59:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1198894011, now seen corresponding path program 3 times [2023-11-29 02:59:57,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:59:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676356886] [2023-11-29 02:59:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:59:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:59:57,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:59:57,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588732740] [2023-11-29 02:59:57,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:59:57,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:59:57,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:59:57,767 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:59:57,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 02:59:58,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 02:59:58,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:59:58,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 02:59:58,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:59:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 3 proven. 123 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 02:59:59,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:00:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 9 proven. 123 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 03:00:42,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:00:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676356886] [2023-11-29 03:00:42,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:00:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588732740] [2023-11-29 03:00:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588732740] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:00:42,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:00:42,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-11-29 03:00:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61004668] [2023-11-29 03:00:42,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:00:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:00:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:00:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:00:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:00:42,874 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand has 30 states, 28 states have (on average 5.928571428571429) internal successors, (166), 29 states have internal predecessors, (166), 13 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 03:00:52,277 WARN L293 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 74 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:01:00,189 WARN L293 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 53 DAG size of output: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:01:05,883 WARN L293 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 48 DAG size of output: 43 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:01:16,199 WARN L293 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 61 DAG size of output: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:01:28,238 WARN L293 SmtUtils]: Spent 11.83s on a formula simplification. DAG size of input: 74 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:01:33,661 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 39 DAG size of output: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:01:47,369 WARN L293 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 57 DAG size of output: 51 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:02:02,082 WARN L293 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 53 DAG size of output: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:02:03,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 03:02:06,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 03:02:15,270 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 51 DAG size of output: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:02:24,486 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 72 DAG size of output: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:02:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:02:24,487 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2023-11-29 03:02:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 03:02:24,488 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.928571428571429) internal successors, (166), 29 states have internal predecessors, (166), 13 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) Word has length 115 [2023-11-29 03:02:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:02:24,489 INFO L225 Difference]: With dead ends: 198 [2023-11-29 03:02:24,489 INFO L226 Difference]: Without dead ends: 197 [2023-11-29 03:02:24,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 106.8s TimeCoverageRelationStatistics Valid=520, Invalid=1550, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 03:02:24,490 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 522 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:02:24,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 350 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-29 03:02:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-29 03:02:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2023-11-29 03:02:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 171 states have (on average 1.0760233918128654) internal successors, (184), 174 states have internal predecessors, (184), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:02:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2023-11-29 03:02:24,507 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 115 [2023-11-29 03:02:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:02:24,508 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2023-11-29 03:02:24,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.928571428571429) internal successors, (166), 29 states have internal predecessors, (166), 13 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-29 03:02:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2023-11-29 03:02:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 03:02:24,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:02:24,509 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:02:24,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 03:02:24,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:02:24,710 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 03:02:24,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:02:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash -448136292, now seen corresponding path program 2 times [2023-11-29 03:02:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:02:24,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492055120] [2023-11-29 03:02:24,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:02:24,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:02:24,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102143523] [2023-11-29 03:02:24,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:02:24,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:24,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:24,721 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:02:24,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 03:02:24,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:02:24,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:02:24,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:02:24,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:02:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-29 03:02:24,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:02:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-29 03:02:24,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:02:24,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492055120] [2023-11-29 03:02:24,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:02:24,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102143523] [2023-11-29 03:02:24,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102143523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:02:24,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:02:24,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 03:02:24,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207659236] [2023-11-29 03:02:24,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:02:24,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:02:24,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:02:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:02:24,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:02:24,978 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 03:02:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:02:25,015 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2023-11-29 03:02:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:02:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 132 [2023-11-29 03:02:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:02:25,017 INFO L225 Difference]: With dead ends: 190 [2023-11-29 03:02:25,017 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 03:02:25,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:02:25,018 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:02:25,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 98 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:02:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 03:02:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-11-29 03:02:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 171 states have (on average 1.0467836257309941) internal successors, (179), 173 states have internal predecessors, (179), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 03:02:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 205 transitions. [2023-11-29 03:02:25,035 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 205 transitions. Word has length 132 [2023-11-29 03:02:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:02:25,036 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 205 transitions. [2023-11-29 03:02:25,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-29 03:02:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 205 transitions. [2023-11-29 03:02:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 03:02:25,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:02:25,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:02:25,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 03:02:25,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:02:25,237 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-29 03:02:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:02:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash -225570720, now seen corresponding path program 2 times [2023-11-29 03:02:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:02:25,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685828349] [2023-11-29 03:02:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:25,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:02:25,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:02:25,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863825911] [2023-11-29 03:02:25,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:02:25,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:25,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:25,247 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:02:25,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b96ba574-facd-462f-9a8d-a76bdf493969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process