./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 757749d35671eda7818ce7a9276fa400eff8da4461713202236766545f2a8763 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:50:46,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:50:46,870 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-21 19:50:46,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:50:46,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:50:46,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:50:46,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:50:46,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:50:46,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:50:46,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:50:46,933 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:50:46,935 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:50:46,935 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:50:46,937 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:50:46,938 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:50:46,938 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:50:46,939 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:50:46,939 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:50:46,940 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:50:46,940 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:50:46,941 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:50:46,941 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:50:46,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:50:46,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:50:46,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:50:46,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:50:46,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:50:46,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:50:46,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:50:46,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:50:46,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:50:46,948 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 19:50:46,948 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:50:46,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:50:46,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:50:46,949 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:50:46,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:50:46,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:50:46,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:50:46,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:46,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:50:46,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:50:46,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:50:46,952 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:50:46,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:50:46,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:50:46,953 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:50:46,954 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:50:46,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:50:46,954 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 757749d35671eda7818ce7a9276fa400eff8da4461713202236766545f2a8763 [2023-11-21 19:50:47,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:50:47,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:50:47,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:50:47,297 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:50:47,298 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:50:47,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2023-11-21 19:50:50,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:50:50,862 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:50:50,862 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2023-11-21 19:50:50,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/data/c48a847c6/17a778215ba14aa193fec4269d55203f/FLAGdbe2e9083 [2023-11-21 19:50:50,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/data/c48a847c6/17a778215ba14aa193fec4269d55203f [2023-11-21 19:50:50,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:50:50,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:50:50,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:50,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:50:50,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:50:50,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:50" (1/1) ... [2023-11-21 19:50:50,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641e26cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:50, skipping insertion in model container [2023-11-21 19:50:50,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:50" (1/1) ... [2023-11-21 19:50:50,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:50:51,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:51,152 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:50:51,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:51,183 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:50:51,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51 WrapperNode [2023-11-21 19:50:51,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:51,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:51,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:50:51,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:50:51,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,223 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-11-21 19:50:51,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:51,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:50:51,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:50:51,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:50:51,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:50:51,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:50:51,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:50:51,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:50:51,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (1/1) ... [2023-11-21 19:50:51,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:51,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:51,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:50:51,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:50:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:50:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:50:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:50:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:50:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:50:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:50:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:50:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:50:51,403 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:50:51,406 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:50:51,677 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:50:51,730 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:50:51,730 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 19:50:51,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:51 BoogieIcfgContainer [2023-11-21 19:50:51,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:50:51,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:50:51,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:50:51,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:50:51,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:50:50" (1/3) ... [2023-11-21 19:50:51,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6d33d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:51, skipping insertion in model container [2023-11-21 19:50:51,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:51" (2/3) ... [2023-11-21 19:50:51,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6d33d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:51, skipping insertion in model container [2023-11-21 19:50:51,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:51" (3/3) ... [2023-11-21 19:50:51,742 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound5.c [2023-11-21 19:50:51,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:50:51,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-21 19:50:51,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:50:51,826 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@3c8e86e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:50:51,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-21 19:50:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 60 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:50:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 19:50:51,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:51,839 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:51,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:50:51,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1181920596, now seen corresponding path program 1 times [2023-11-21 19:50:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:51,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841936305] [2023-11-21 19:50:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:51,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:50:52,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841936305] [2023-11-21 19:50:52,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841936305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:52,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:52,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011217590] [2023-11-21 19:50:52,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:52,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:50:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:50:52,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:50:52,193 INFO L87 Difference]: Start difference. First operand has 67 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 60 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:52,277 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2023-11-21 19:50:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:50:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-21 19:50:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:52,288 INFO L225 Difference]: With dead ends: 94 [2023-11-21 19:50:52,288 INFO L226 Difference]: Without dead ends: 68 [2023-11-21 19:50:52,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:50:52,295 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:52,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 179 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:50:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-21 19:50:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-21 19:50:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 62 states have internal predecessors, (64), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:50:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-11-21 19:50:52,341 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 10 [2023-11-21 19:50:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:52,342 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-11-21 19:50:52,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-11-21 19:50:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 19:50:52,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:52,345 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:52,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:50:52,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:50:52,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 454626682, now seen corresponding path program 1 times [2023-11-21 19:50:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947591103] [2023-11-21 19:50:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:52,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:50:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718297160] [2023-11-21 19:50:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:52,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:52,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:52,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:50:52,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:50:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:52,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:50:52,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:50:52,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:52,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947591103] [2023-11-21 19:50:52,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:50:52,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718297160] [2023-11-21 19:50:52,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718297160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:52,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:52,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:52,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171519422] [2023-11-21 19:50:52,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:52,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:50:52,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:52,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:50:52,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:50:52,568 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:52,852 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2023-11-21 19:50:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:50:52,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-21 19:50:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:52,856 INFO L225 Difference]: With dead ends: 106 [2023-11-21 19:50:52,856 INFO L226 Difference]: Without dead ends: 101 [2023-11-21 19:50:52,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:50:52,858 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 120 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:52,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 42 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:50:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-21 19:50:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2023-11-21 19:50:52,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 79 states have internal predecessors, (93), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:50:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2023-11-21 19:50:52,879 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 13 [2023-11-21 19:50:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:52,880 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2023-11-21 19:50:52,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2023-11-21 19:50:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 19:50:52,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:52,881 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:52,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 19:50:53,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:53,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:50:53,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1208525307, now seen corresponding path program 1 times [2023-11-21 19:50:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117716636] [2023-11-21 19:50:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:53,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:50:53,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366950818] [2023-11-21 19:50:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:53,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:53,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:53,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:50:53,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:50:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:53,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:50:53,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:50:53,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:53,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:53,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117716636] [2023-11-21 19:50:53,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:50:53,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366950818] [2023-11-21 19:50:53,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366950818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:53,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:53,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:53,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606547572] [2023-11-21 19:50:53,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:53,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:50:53,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:50:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:50:53,274 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:53,433 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2023-11-21 19:50:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:50:53,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-21 19:50:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:53,442 INFO L225 Difference]: With dead ends: 100 [2023-11-21 19:50:53,442 INFO L226 Difference]: Without dead ends: 94 [2023-11-21 19:50:53,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:50:53,448 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 81 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:53,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 45 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:50:53,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-21 19:50:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2023-11-21 19:50:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 80 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:50:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2023-11-21 19:50:53,489 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 14 [2023-11-21 19:50:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:53,489 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2023-11-21 19:50:53,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2023-11-21 19:50:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 19:50:53,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:53,491 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:53,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:50:53,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:53,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:50:53,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1533366850, now seen corresponding path program 1 times [2023-11-21 19:50:53,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:53,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995942804] [2023-11-21 19:50:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:53,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:53,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:50:53,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095230334] [2023-11-21 19:50:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:53,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:53,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:50:53,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:50:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:53,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:50:53,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:50:53,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:53,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:53,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995942804] [2023-11-21 19:50:53,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:50:53,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095230334] [2023-11-21 19:50:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095230334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:53,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:53,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:50:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412738668] [2023-11-21 19:50:53,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:53,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:53,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:53,882 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:53,999 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-11-21 19:50:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-21 19:50:54,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:54,001 INFO L225 Difference]: With dead ends: 94 [2023-11-21 19:50:54,001 INFO L226 Difference]: Without dead ends: 92 [2023-11-21 19:50:54,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:54,006 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:54,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:50:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-21 19:50:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2023-11-21 19:50:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 80 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:50:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2023-11-21 19:50:54,024 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 17 [2023-11-21 19:50:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:54,025 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2023-11-21 19:50:54,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2023-11-21 19:50:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:50:54,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:54,026 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:54,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:50:54,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:54,233 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:50:54,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash -289732033, now seen corresponding path program 1 times [2023-11-21 19:50:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:54,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11721862] [2023-11-21 19:50:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:54,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:54,262 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:50:54,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716980847] [2023-11-21 19:50:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:54,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:54,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:54,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:50:54,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:50:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:54,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:50:54,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:50:54,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:54,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:54,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11721862] [2023-11-21 19:50:54,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:50:54,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716980847] [2023-11-21 19:50:54,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716980847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:54,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:54,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:50:54,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952113174] [2023-11-21 19:50:54,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:54,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:54,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:54,429 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:54,533 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2023-11-21 19:50:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-21 19:50:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:54,539 INFO L225 Difference]: With dead ends: 92 [2023-11-21 19:50:54,539 INFO L226 Difference]: Without dead ends: 90 [2023-11-21 19:50:54,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:54,540 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:54,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:50:54,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-21 19:50:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2023-11-21 19:50:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 80 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:50:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2023-11-21 19:50:54,551 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 18 [2023-11-21 19:50:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:54,551 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2023-11-21 19:50:54,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 19:50:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2023-11-21 19:50:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 19:50:54,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:54,553 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:54,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:50:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:54,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:50:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -261836716, now seen corresponding path program 1 times [2023-11-21 19:50:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:54,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925323145] [2023-11-21 19:50:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:54,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:50:54,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925132025] [2023-11-21 19:50:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:54,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:54,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:54,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:50:54,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:50:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:54,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:50:54,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:50:54,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:50:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:50:55,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:55,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925323145] [2023-11-21 19:50:55,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:50:55,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925132025] [2023-11-21 19:50:55,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925132025] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:50:55,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2055304497] [2023-11-21 19:50:55,130 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-21 19:50:55,130 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:50:55,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:50:55,141 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:50:55,142 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:50:55,942 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-21 19:50:55,949 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-21 19:50:56,019 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:50:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2055304497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:57,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:50:57,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [3, 3] total 16 [2023-11-21 19:50:57,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761192549] [2023-11-21 19:50:57,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:57,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 19:50:57,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:57,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 19:50:57,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-21 19:50:57,177 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 14 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:50:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:57,820 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2023-11-21 19:50:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 19:50:57,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-11-21 19:50:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:57,822 INFO L225 Difference]: With dead ends: 92 [2023-11-21 19:50:57,822 INFO L226 Difference]: Without dead ends: 89 [2023-11-21 19:50:57,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-21 19:50:57,823 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:57,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 165 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 19:50:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-21 19:50:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-21 19:50:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 81 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:50:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2023-11-21 19:50:57,836 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 25 [2023-11-21 19:50:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:57,837 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2023-11-21 19:50:57,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:50:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2023-11-21 19:50:57,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:50:57,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:57,839 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:50:57,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:50:58,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 19:50:58,053 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:50:58,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash -749169192, now seen corresponding path program 1 times [2023-11-21 19:50:58,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:58,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024893021] [2023-11-21 19:50:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:58,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:58,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:50:58,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763674715] [2023-11-21 19:50:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:50:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:58,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:50:58,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:50:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:58,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:50:58,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:50:58,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:58,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:50:58,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024893021] [2023-11-21 19:50:58,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:50:58,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763674715] [2023-11-21 19:50:58,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763674715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:58,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:58,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:50:58,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895834710] [2023-11-21 19:50:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:58,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:50:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:50:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:50:58,349 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:01,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-21 19:51:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:02,748 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2023-11-21 19:51:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:51:02,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-21 19:51:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:02,751 INFO L225 Difference]: With dead ends: 138 [2023-11-21 19:51:02,751 INFO L226 Difference]: Without dead ends: 137 [2023-11-21 19:51:02,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:51:02,752 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 80 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:02,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 95 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-21 19:51:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-21 19:51:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 90. [2023-11-21 19:51:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 82 states have internal predecessors, (85), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2023-11-21 19:51:02,765 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 29 [2023-11-21 19:51:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:02,766 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2023-11-21 19:51:02,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2023-11-21 19:51:02,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 19:51:02,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:02,767 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:51:02,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:02,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:02,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:02,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1749408370, now seen corresponding path program 1 times [2023-11-21 19:51:02,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:02,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371713716] [2023-11-21 19:51:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:02,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:03,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202894683] [2023-11-21 19:51:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:03,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:03,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:03,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:51:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:03,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:51:03,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:05,160 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_55| Int) (|ULTIMATE.start_main_~z~0#1| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~x~0#1_55| |ULTIMATE.start_main_~z~0#1|))) (and (<= 1 |v_ULTIMATE.start_main_~x~0#1_55|) (<= .cse0 9223372036854775807) (<= (+ |v_ULTIMATE.start_main_~x~0#1_55| |c_ULTIMATE.start_main_~x~0#1|) .cse0)))) is different from true [2023-11-21 19:51:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:05,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:05,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371713716] [2023-11-21 19:51:05,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202894683] [2023-11-21 19:51:05,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202894683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:05,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:05,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:51:05,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622724220] [2023-11-21 19:51:05,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:51:05,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:51:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-11-21 19:51:05,184 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:05,282 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2023-11-21 19:51:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:51:05,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-21 19:51:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:05,286 INFO L225 Difference]: With dead ends: 92 [2023-11-21 19:51:05,286 INFO L226 Difference]: Without dead ends: 91 [2023-11-21 19:51:05,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-11-21 19:51:05,288 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:05,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 76 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2023-11-21 19:51:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-21 19:51:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-21 19:51:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 83 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2023-11-21 19:51:05,307 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 30 [2023-11-21 19:51:05,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:05,308 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2023-11-21 19:51:05,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2023-11-21 19:51:05,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 19:51:05,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:05,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:51:05,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:05,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:05,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:05,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1602915482, now seen corresponding path program 1 times [2023-11-21 19:51:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:05,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711182310] [2023-11-21 19:51:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:05,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846542482] [2023-11-21 19:51:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:05,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:05,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:05,540 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:05,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 19:51:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:05,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:51:05,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:05,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:05,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:05,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711182310] [2023-11-21 19:51:05,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:05,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846542482] [2023-11-21 19:51:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846542482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:51:05,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64916109] [2023-11-21 19:51:05,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:05,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:51:05,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:51:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:51:05,684 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:07,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-21 19:51:09,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-21 19:51:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:09,142 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2023-11-21 19:51:09,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:51:09,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-21 19:51:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:09,144 INFO L225 Difference]: With dead ends: 105 [2023-11-21 19:51:09,144 INFO L226 Difference]: Without dead ends: 103 [2023-11-21 19:51:09,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:09,145 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:09,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 66 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-11-21 19:51:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-21 19:51:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2023-11-21 19:51:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 89 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:09,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2023-11-21 19:51:09,155 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 31 [2023-11-21 19:51:09,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:09,156 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2023-11-21 19:51:09,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:09,156 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2023-11-21 19:51:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 19:51:09,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:09,157 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:51:09,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:09,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:09,377 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:09,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:09,378 INFO L85 PathProgramCache]: Analyzing trace with hash 548782437, now seen corresponding path program 1 times [2023-11-21 19:51:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949239361] [2023-11-21 19:51:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:09,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:09,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:09,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549498402] [2023-11-21 19:51:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:09,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:09,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:09,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:09,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 19:51:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:09,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:51:09,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:51:09,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:51:09,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949239361] [2023-11-21 19:51:09,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549498402] [2023-11-21 19:51:09,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549498402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:51:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2116217727] [2023-11-21 19:51:09,728 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-11-21 19:51:09,729 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:51:09,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:51:09,730 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:51:09,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:51:10,154 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-21 19:51:10,159 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-21 19:51:10,198 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:51:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2116217727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:11,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:51:11,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 19 [2023-11-21 19:51:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201483294] [2023-11-21 19:51:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:11,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 19:51:11,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 19:51:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-21 19:51:11,434 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 16 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:12,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:12,087 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2023-11-21 19:51:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 19:51:12,088 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-11-21 19:51:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:12,089 INFO L225 Difference]: With dead ends: 101 [2023-11-21 19:51:12,089 INFO L226 Difference]: Without dead ends: 99 [2023-11-21 19:51:12,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-21 19:51:12,090 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:12,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 143 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 19:51:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-21 19:51:12,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-21 19:51:12,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 91 states have internal predecessors, (99), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2023-11-21 19:51:12,103 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 31 [2023-11-21 19:51:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:12,105 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2023-11-21 19:51:12,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:12,106 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2023-11-21 19:51:12,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 19:51:12,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:12,110 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:51:12,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:12,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 19:51:12,331 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:12,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:12,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1849227504, now seen corresponding path program 1 times [2023-11-21 19:51:12,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755649214] [2023-11-21 19:51:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:12,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:12,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:12,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552827712] [2023-11-21 19:51:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:12,361 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:12,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 19:51:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:12,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:51:12,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:12,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:12,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:12,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755649214] [2023-11-21 19:51:12,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:12,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552827712] [2023-11-21 19:51:12,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552827712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:12,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:12,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:51:12,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711636053] [2023-11-21 19:51:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:51:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:51:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:51:12,485 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:13,835 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2023-11-21 19:51:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:51:13,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-21 19:51:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:13,837 INFO L225 Difference]: With dead ends: 106 [2023-11-21 19:51:13,837 INFO L226 Difference]: Without dead ends: 97 [2023-11-21 19:51:13,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:13,838 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:13,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 19:51:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-21 19:51:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2023-11-21 19:51:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 84 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2023-11-21 19:51:13,850 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 32 [2023-11-21 19:51:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:13,850 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2023-11-21 19:51:13,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2023-11-21 19:51:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 19:51:13,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:13,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:13,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:14,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:14,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:14,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2132136980, now seen corresponding path program 1 times [2023-11-21 19:51:14,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713396238] [2023-11-21 19:51:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:14,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:14,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111889332] [2023-11-21 19:51:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:14,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:14,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:14,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:14,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 19:51:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:14,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:51:14,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:14,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:14,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:14,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713396238] [2023-11-21 19:51:14,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:14,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111889332] [2023-11-21 19:51:14,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111889332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:14,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:14,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:51:14,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322383161] [2023-11-21 19:51:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:14,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:51:14,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:14,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:51:14,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:14,223 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:14,255 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2023-11-21 19:51:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:51:14,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-11-21 19:51:14,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:14,257 INFO L225 Difference]: With dead ends: 92 [2023-11-21 19:51:14,258 INFO L226 Difference]: Without dead ends: 91 [2023-11-21 19:51:14,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:51:14,259 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 43 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:14,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 162 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:51:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-21 19:51:14,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-21 19:51:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.459016393442623) internal successors, (89), 83 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2023-11-21 19:51:14,270 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 34 [2023-11-21 19:51:14,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:14,271 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2023-11-21 19:51:14,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2023-11-21 19:51:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-21 19:51:14,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:14,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:14,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:14,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:14,485 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:14,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1671736984, now seen corresponding path program 1 times [2023-11-21 19:51:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:14,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291919294] [2023-11-21 19:51:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:14,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:14,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:14,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526168415] [2023-11-21 19:51:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:14,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:14,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:14,496 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:14,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 19:51:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:14,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:51:14,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:14,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:14,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291919294] [2023-11-21 19:51:14,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526168415] [2023-11-21 19:51:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526168415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:14,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:14,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:51:14,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915745027] [2023-11-21 19:51:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:14,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:51:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:51:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:14,600 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:14,675 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2023-11-21 19:51:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:51:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2023-11-21 19:51:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:14,677 INFO L225 Difference]: With dead ends: 96 [2023-11-21 19:51:14,677 INFO L226 Difference]: Without dead ends: 95 [2023-11-21 19:51:14,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:51:14,678 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 36 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:14,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 200 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:51:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-21 19:51:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2023-11-21 19:51:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 82 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2023-11-21 19:51:14,690 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 35 [2023-11-21 19:51:14,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:14,690 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2023-11-21 19:51:14,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:14,691 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2023-11-21 19:51:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 19:51:14,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:14,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:14,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-21 19:51:14,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 19:51:14,901 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:14,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash 221474469, now seen corresponding path program 1 times [2023-11-21 19:51:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397413830] [2023-11-21 19:51:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:14,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:14,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072251340] [2023-11-21 19:51:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:14,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:14,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:14,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:14,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-21 19:51:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:14,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:51:14,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:15,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:51:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:15,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:15,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397413830] [2023-11-21 19:51:15,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:15,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072251340] [2023-11-21 19:51:15,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072251340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:51:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121227349] [2023-11-21 19:51:15,159 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-21 19:51:15,159 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:51:15,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:51:15,160 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:51:15,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:51:21,063 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 77 for LOIs [2023-11-21 19:51:21,099 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-21 19:51:21,140 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:51:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2121227349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:24,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:51:24,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [5, 6] total 35 [2023-11-21 19:51:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518642433] [2023-11-21 19:51:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-21 19:51:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-21 19:51:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2023-11-21 19:51:24,246 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:33,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:33,490 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-11-21 19:51:33,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-21 19:51:33,490 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2023-11-21 19:51:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:33,491 INFO L225 Difference]: With dead ends: 94 [2023-11-21 19:51:33,491 INFO L226 Difference]: Without dead ends: 84 [2023-11-21 19:51:33,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=557, Invalid=3475, Unknown=0, NotChecked=0, Total=4032 [2023-11-21 19:51:33,494 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 149 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:33,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 84 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-21 19:51:33,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-21 19:51:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2023-11-21 19:51:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 74 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:33,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-11-21 19:51:33,504 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 37 [2023-11-21 19:51:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:33,504 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-11-21 19:51:33,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-11-21 19:51:33,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 19:51:33,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:33,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:33,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 19:51:33,706 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:33,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash 221474490, now seen corresponding path program 1 times [2023-11-21 19:51:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:33,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437482270] [2023-11-21 19:51:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:33,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:33,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:33,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811817468] [2023-11-21 19:51:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:33,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:33,717 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:33,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-21 19:51:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:33,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:51:33,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:51:33,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:51:34,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:34,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437482270] [2023-11-21 19:51:34,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:34,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811817468] [2023-11-21 19:51:34,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811817468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:51:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [297891091] [2023-11-21 19:51:34,096 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-11-21 19:51:34,096 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:51:34,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:51:34,097 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:51:34,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:51:39,197 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 77 for LOIs [2023-11-21 19:51:39,219 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-21 19:51:39,243 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:51:42,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4564#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 0) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 1 ~counter~0) (<= ~counter~0 5) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~z~0#1|))' at error location [2023-11-21 19:51:42,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:51:42,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:51:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-21 19:51:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236602037] [2023-11-21 19:51:42,698 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 19:51:42,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:51:42,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:51:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 19:51:42,700 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 7 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:42,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:42,834 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2023-11-21 19:51:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:51:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2023-11-21 19:51:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:42,835 INFO L225 Difference]: With dead ends: 82 [2023-11-21 19:51:42,835 INFO L226 Difference]: Without dead ends: 80 [2023-11-21 19:51:42,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-11-21 19:51:42,837 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:42,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 84 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:51:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-21 19:51:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-21 19:51:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 72 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2023-11-21 19:51:42,847 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 37 [2023-11-21 19:51:42,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:42,848 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2023-11-21 19:51:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 7.75) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:42,848 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2023-11-21 19:51:42,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 19:51:42,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:42,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:42,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:43,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 19:51:43,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-21 19:51:43,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1724225349, now seen corresponding path program 1 times [2023-11-21 19:51:43,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:43,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473340134] [2023-11-21 19:51:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:43,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:43,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:51:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701860280] [2023-11-21 19:51:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:43,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:43,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:43,087 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:43,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3278eed-2366-4b23-8ad5-bf87081db4d0/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-21 19:51:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:43,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 19:51:43,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:51:43,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:51:43,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473340134] [2023-11-21 19:51:43,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:51:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701860280] [2023-11-21 19:51:43,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701860280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:51:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927237036] [2023-11-21 19:51:43,513 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-11-21 19:51:43,513 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:51:43,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:51:43,514 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:51:43,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:51:46,176 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 77 for LOIs [2023-11-21 19:51:46,198 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-21 19:51:46,223 INFO L180 IcfgInterpreter]: Interpretation finished