./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire --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 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:40:11,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:40:11,988 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 20:40:12,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:40:12,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:40:12,056 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:40:12,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:40:12,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:40:12,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:40:12,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:40:12,060 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:40:12,061 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:40:12,061 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:40:12,062 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:40:12,062 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:40:12,063 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:40:12,064 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:40:12,064 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:40:12,065 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:40:12,066 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:40:12,066 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:40:12,067 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:40:12,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:40:12,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:40:12,069 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:40:12,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:40:12,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:40:12,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:40:12,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:40:12,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:40:12,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:40:12,083 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:40:12,084 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:40:12,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:40:12,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:40:12,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:40:12,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:40:12,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:40:12,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:40:12,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:12,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:40:12,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:40:12,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:40:12,089 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:40:12,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:40:12,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:40:12,090 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:40:12,090 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:40:12,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:40:12,090 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_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 [2023-11-23 20:40:12,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:40:12,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:40:12,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:40:12,457 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:40:12,459 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:40:12,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2023-11-23 20:40:15,618 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:40:15,876 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:40:15,876 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2023-11-23 20:40:15,886 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/data/7a84eef5c/96677303da25424e80e1bf9986d47a85/FLAGf65b82e30 [2023-11-23 20:40:15,902 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/data/7a84eef5c/96677303da25424e80e1bf9986d47a85 [2023-11-23 20:40:15,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:40:15,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:40:15,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:15,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:40:15,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:40:15,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432fc1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15, skipping insertion in model container [2023-11-23 20:40:15,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:40:16,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:16,129 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:40:16,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:16,168 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:40:16,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16 WrapperNode [2023-11-23 20:40:16,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:16,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:16,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:40:16,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:40:16,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,228 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2023-11-23 20:40:16,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:16,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:40:16,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:40:16,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:40:16,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:40:16,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:40:16,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:40:16,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:40:16,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:16,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:16,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:40:16,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:40:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:40:16,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:40:16,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:40:16,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:40:16,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:40:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:40:16,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:40:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:40:16,472 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:40:16,475 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:40:17,309 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:40:17,372 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:40:17,372 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:40:17,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:17 BoogieIcfgContainer [2023-11-23 20:40:17,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:40:17,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:40:17,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:40:17,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:40:17,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:40:15" (1/3) ... [2023-11-23 20:40:17,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edac9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:17, skipping insertion in model container [2023-11-23 20:40:17,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (2/3) ... [2023-11-23 20:40:17,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edac9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:17, skipping insertion in model container [2023-11-23 20:40:17,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:17" (3/3) ... [2023-11-23 20:40:17,392 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound20.c [2023-11-23 20:40:17,414 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:40:17,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2023-11-23 20:40:17,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:40:17,485 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;@34e6879a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:40:17,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-11-23 20:40:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 109 states have (on average 1.9541284403669725) internal successors, (213), 211 states have internal predecessors, (213), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:40:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:40:17,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:17,501 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:17,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:17,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash -234459571, now seen corresponding path program 1 times [2023-11-23 20:40:17,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:17,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907802985] [2023-11-23 20:40:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:17,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:17,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907802985] [2023-11-23 20:40:17,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907802985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:17,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:17,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:17,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051323098] [2023-11-23 20:40:17,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:17,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:40:17,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:40:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:40:17,738 INFO L87 Difference]: Start difference. First operand has 219 states, 109 states have (on average 1.9541284403669725) internal successors, (213), 211 states have internal predecessors, (213), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-23 20:40:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:17,816 INFO L93 Difference]: Finished difference Result 305 states and 321 transitions. [2023-11-23 20:40:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:40:17,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2023-11-23 20:40:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:17,833 INFO L225 Difference]: With dead ends: 305 [2023-11-23 20:40:17,833 INFO L226 Difference]: Without dead ends: 191 [2023-11-23 20:40:17,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:40:17,843 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:17,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-23 20:40:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-23 20:40:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 108 states have (on average 1.712962962962963) internal successors, (185), 184 states have internal predecessors, (185), 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) [2023-11-23 20:40:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2023-11-23 20:40:17,913 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 10 [2023-11-23 20:40:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:17,915 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2023-11-23 20:40:17,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-23 20:40:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2023-11-23 20:40:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:40:17,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:17,918 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:17,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:40:17,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:17,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash -234467783, now seen corresponding path program 1 times [2023-11-23 20:40:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:17,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886064326] [2023-11-23 20:40:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:18,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886064326] [2023-11-23 20:40:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886064326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:18,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047186052] [2023-11-23 20:40:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:18,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:18,061 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-23 20:40:18,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:18,587 INFO L93 Difference]: Finished difference Result 356 states and 360 transitions. [2023-11-23 20:40:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:18,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2023-11-23 20:40:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:18,597 INFO L225 Difference]: With dead ends: 356 [2023-11-23 20:40:18,598 INFO L226 Difference]: Without dead ends: 292 [2023-11-23 20:40:18,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:18,605 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 102 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:18,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 124 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:40:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-23 20:40:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 282. [2023-11-23 20:40:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.4393939393939394) internal successors, (285), 274 states have internal predecessors, (285), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:40:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 295 transitions. [2023-11-23 20:40:18,653 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 295 transitions. Word has length 10 [2023-11-23 20:40:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:18,654 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 295 transitions. [2023-11-23 20:40:18,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2023-11-23 20:40:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 295 transitions. [2023-11-23 20:40:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 20:40:18,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:18,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:18,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:18,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:18,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1676794465, now seen corresponding path program 1 times [2023-11-23 20:40:18,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:18,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465269040] [2023-11-23 20:40:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:18,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:18,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320196342] [2023-11-23 20:40:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:18,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:18,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:18,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:18,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:40:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:18,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:18,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:18,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:18,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:18,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465269040] [2023-11-23 20:40:18,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:18,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320196342] [2023-11-23 20:40:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320196342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:18,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582854670] [2023-11-23 20:40:18,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:18,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:18,971 INFO L87 Difference]: Start difference. First operand 282 states and 295 transitions. Second operand has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 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) [2023-11-23 20:40:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:19,081 INFO L93 Difference]: Finished difference Result 306 states and 313 transitions. [2023-11-23 20:40:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:19,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 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 48 [2023-11-23 20:40:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:19,085 INFO L225 Difference]: With dead ends: 306 [2023-11-23 20:40:19,085 INFO L226 Difference]: Without dead ends: 304 [2023-11-23 20:40:19,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:19,087 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 76 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:19,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 342 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-23 20:40:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 282. [2023-11-23 20:40:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.4292929292929293) internal successors, (283), 274 states have internal predecessors, (283), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:40:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 293 transitions. [2023-11-23 20:40:19,107 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 293 transitions. Word has length 48 [2023-11-23 20:40:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:19,108 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 293 transitions. [2023-11-23 20:40:19,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 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) [2023-11-23 20:40:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 293 transitions. [2023-11-23 20:40:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 20:40:19,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:19,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:19,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:19,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 20:40:19,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:19,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash -441020739, now seen corresponding path program 1 times [2023-11-23 20:40:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:19,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845732563] [2023-11-23 20:40:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:19,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:19,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982530194] [2023-11-23 20:40:19,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:19,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:19,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:19,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:40:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:19,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:19,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:19,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:19,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845732563] [2023-11-23 20:40:19,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982530194] [2023-11-23 20:40:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982530194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:19,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:19,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:19,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026936685] [2023-11-23 20:40:19,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:19,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:19,579 INFO L87 Difference]: Start difference. First operand 282 states and 293 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-23 20:40:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:19,670 INFO L93 Difference]: Finished difference Result 308 states and 311 transitions. [2023-11-23 20:40:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:19,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 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 49 [2023-11-23 20:40:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:19,673 INFO L225 Difference]: With dead ends: 308 [2023-11-23 20:40:19,674 INFO L226 Difference]: Without dead ends: 303 [2023-11-23 20:40:19,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:19,677 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 71 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:19,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 346 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-23 20:40:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 281. [2023-11-23 20:40:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 197 states have (on average 1.4111675126903553) internal successors, (278), 273 states have internal predecessors, (278), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:40:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 288 transitions. [2023-11-23 20:40:19,703 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 288 transitions. Word has length 49 [2023-11-23 20:40:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:19,704 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 288 transitions. [2023-11-23 20:40:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-23 20:40:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 288 transitions. [2023-11-23 20:40:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 20:40:19,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:19,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:19,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:19,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-23 20:40:19,925 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:19,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:19,925 INFO L85 PathProgramCache]: Analyzing trace with hash -786740895, now seen corresponding path program 1 times [2023-11-23 20:40:19,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:19,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141401915] [2023-11-23 20:40:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:19,939 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:19,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431620657] [2023-11-23 20:40:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:19,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:19,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:19,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 20:40:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:19,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:20,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:20,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:20,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:20,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141401915] [2023-11-23 20:40:20,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:20,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431620657] [2023-11-23 20:40:20,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431620657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:20,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391699866] [2023-11-23 20:40:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:20,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:20,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:20,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:20,152 INFO L87 Difference]: Start difference. First operand 281 states and 288 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-23 20:40:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:20,392 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2023-11-23 20:40:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:20,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 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 50 [2023-11-23 20:40:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:20,395 INFO L225 Difference]: With dead ends: 303 [2023-11-23 20:40:20,395 INFO L226 Difference]: Without dead ends: 260 [2023-11-23 20:40:20,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:20,397 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 153 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:20,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 271 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:40:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-23 20:40:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 240. [2023-11-23 20:40:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 156 states have (on average 1.5064102564102564) internal successors, (235), 232 states have internal predecessors, (235), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:40:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 245 transitions. [2023-11-23 20:40:20,408 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 245 transitions. Word has length 50 [2023-11-23 20:40:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:20,409 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 245 transitions. [2023-11-23 20:40:20,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-23 20:40:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 245 transitions. [2023-11-23 20:40:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 20:40:20,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:20,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:20,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:20,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:20,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:20,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:20,629 INFO L85 PathProgramCache]: Analyzing trace with hash -304989260, now seen corresponding path program 1 times [2023-11-23 20:40:20,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:20,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480061183] [2023-11-23 20:40:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:20,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806631513] [2023-11-23 20:40:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:20,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:20,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:20,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:20,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 20:40:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:20,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:20,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:20,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:20,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480061183] [2023-11-23 20:40:20,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806631513] [2023-11-23 20:40:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806631513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:20,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:20,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:20,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011838118] [2023-11-23 20:40:20,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:20,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:20,830 INFO L87 Difference]: Start difference. First operand 240 states and 245 transitions. Second operand has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-23 20:40:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:20,848 INFO L93 Difference]: Finished difference Result 240 states and 245 transitions. [2023-11-23 20:40:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:20,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 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 56 [2023-11-23 20:40:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:20,850 INFO L225 Difference]: With dead ends: 240 [2023-11-23 20:40:20,850 INFO L226 Difference]: Without dead ends: 239 [2023-11-23 20:40:20,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:20,853 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 135 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:20,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 190 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:20,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-23 20:40:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-11-23 20:40:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 156 states have (on average 1.4935897435897436) internal successors, (233), 231 states have internal predecessors, (233), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:40:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2023-11-23 20:40:20,866 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 56 [2023-11-23 20:40:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:20,869 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 243 transitions. [2023-11-23 20:40:20,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-23 20:40:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 243 transitions. [2023-11-23 20:40:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 20:40:20,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:20,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:20,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:21,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 20:40:21,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,091 INFO L85 PathProgramCache]: Analyzing trace with hash -864732330, now seen corresponding path program 1 times [2023-11-23 20:40:21,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087964037] [2023-11-23 20:40:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162192222] [2023-11-23 20:40:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:21,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:21,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:21,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 20:40:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:21,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:21,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:21,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:21,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:21,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087964037] [2023-11-23 20:40:21,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:21,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162192222] [2023-11-23 20:40:21,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162192222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:21,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:21,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:21,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982225969] [2023-11-23 20:40:21,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:21,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:21,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:21,254 INFO L87 Difference]: Start difference. First operand 239 states and 243 transitions. Second operand has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 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) [2023-11-23 20:40:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:21,277 INFO L93 Difference]: Finished difference Result 240 states and 243 transitions. [2023-11-23 20:40:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:21,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 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 57 [2023-11-23 20:40:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:21,280 INFO L225 Difference]: With dead ends: 240 [2023-11-23 20:40:21,280 INFO L226 Difference]: Without dead ends: 239 [2023-11-23 20:40:21,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:21,282 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:21,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:40:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-23 20:40:21,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-11-23 20:40:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 156 states have (on average 1.4871794871794872) internal successors, (232), 231 states have internal predecessors, (232), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 20:40:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 242 transitions. [2023-11-23 20:40:21,294 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 242 transitions. Word has length 57 [2023-11-23 20:40:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:21,295 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 242 transitions. [2023-11-23 20:40:21,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 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) [2023-11-23 20:40:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 242 transitions. [2023-11-23 20:40:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 20:40:21,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:21,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:21,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:21,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:21,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash -832738470, now seen corresponding path program 1 times [2023-11-23 20:40:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:21,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922126321] [2023-11-23 20:40:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:21,542 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:21,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047544838] [2023-11-23 20:40:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:21,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:21,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 20:40:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:21,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:40:21,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:21,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:21,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922126321] [2023-11-23 20:40:21,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047544838] [2023-11-23 20:40:21,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047544838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:21,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:21,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:21,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249998115] [2023-11-23 20:40:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:21,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:21,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:21,690 INFO L87 Difference]: Start difference. First operand 239 states and 242 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-11-23 20:40:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,243 INFO L93 Difference]: Finished difference Result 421 states and 426 transitions. [2023-11-23 20:40:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 61 [2023-11-23 20:40:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,246 INFO L225 Difference]: With dead ends: 421 [2023-11-23 20:40:22,246 INFO L226 Difference]: Without dead ends: 356 [2023-11-23 20:40:22,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:22,248 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 115 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 137 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:40:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-23 20:40:22,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 343. [2023-11-23 20:40:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 258 states have (on average 1.3449612403100775) internal successors, (347), 333 states have internal predecessors, (347), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 20:40:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 361 transitions. [2023-11-23 20:40:22,262 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 361 transitions. Word has length 61 [2023-11-23 20:40:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,262 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 361 transitions. [2023-11-23 20:40:22,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-11-23 20:40:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 361 transitions. [2023-11-23 20:40:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 20:40:22,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:22,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:22,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:22,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 20:40:22,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:22,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash -5931712, now seen corresponding path program 1 times [2023-11-23 20:40:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:22,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096840394] [2023-11-23 20:40:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:22,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:22,512 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:22,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62545506] [2023-11-23 20:40:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:22,514 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:22,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 20:40:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:22,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:22,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:22,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:22,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:22,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096840394] [2023-11-23 20:40:22,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:22,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62545506] [2023-11-23 20:40:22,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62545506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:22,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:22,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:22,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386559088] [2023-11-23 20:40:22,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:22,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:22,698 INFO L87 Difference]: Start difference. First operand 343 states and 361 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-23 20:40:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:22,816 INFO L93 Difference]: Finished difference Result 345 states and 361 transitions. [2023-11-23 20:40:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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 68 [2023-11-23 20:40:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:22,819 INFO L225 Difference]: With dead ends: 345 [2023-11-23 20:40:22,819 INFO L226 Difference]: Without dead ends: 344 [2023-11-23 20:40:22,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:22,820 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 57 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:22,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 302 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-23 20:40:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2023-11-23 20:40:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 258 states have (on average 1.3410852713178294) internal successors, (346), 333 states have internal predecessors, (346), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 20:40:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 360 transitions. [2023-11-23 20:40:22,834 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 360 transitions. Word has length 68 [2023-11-23 20:40:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:22,834 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 360 transitions. [2023-11-23 20:40:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-23 20:40:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 360 transitions. [2023-11-23 20:40:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 20:40:22,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:22,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:22,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 20:40:23,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 20:40:23,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:23,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash -183882910, now seen corresponding path program 1 times [2023-11-23 20:40:23,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655681790] [2023-11-23 20:40:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:23,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55002928] [2023-11-23 20:40:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:23,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:23,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:23,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 20:40:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:23,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:23,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:23,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:23,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:23,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655681790] [2023-11-23 20:40:23,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:23,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55002928] [2023-11-23 20:40:23,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55002928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:23,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:23,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939144354] [2023-11-23 20:40:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:23,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:23,233 INFO L87 Difference]: Start difference. First operand 343 states and 360 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2023-11-23 20:40:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:23,359 INFO L93 Difference]: Finished difference Result 344 states and 360 transitions. [2023-11-23 20:40:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:23,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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 69 [2023-11-23 20:40:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:23,361 INFO L225 Difference]: With dead ends: 344 [2023-11-23 20:40:23,361 INFO L226 Difference]: Without dead ends: 343 [2023-11-23 20:40:23,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:23,362 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 47 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:23,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 311 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-23 20:40:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-23 20:40:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 258 states have (on average 1.3372093023255813) internal successors, (345), 333 states have internal predecessors, (345), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 20:40:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 359 transitions. [2023-11-23 20:40:23,375 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 359 transitions. Word has length 69 [2023-11-23 20:40:23,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:23,376 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 359 transitions. [2023-11-23 20:40:23,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2023-11-23 20:40:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 359 transitions. [2023-11-23 20:40:23,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 20:40:23,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:23,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:23,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:23,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 20:40:23,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:23,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash -924794998, now seen corresponding path program 1 times [2023-11-23 20:40:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224485165] [2023-11-23 20:40:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:23,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:23,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421021094] [2023-11-23 20:40:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:23,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:23,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:23,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:23,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 20:40:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:23,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:40:23,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:24,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:40:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:40:24,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:24,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224485165] [2023-11-23 20:40:24,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:24,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421021094] [2023-11-23 20:40:24,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421021094] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:40:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1467783067] [2023-11-23 20:40:24,361 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-11-23 20:40:24,362 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:40:24,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:40:24,371 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:40:24,371 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:40:29,745 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-11-23 20:40:29,811 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 55 for LOIs [2023-11-23 20:40:29,845 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:40:38,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1467783067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:38,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 20:40:38,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [4, 4] total 25 [2023-11-23 20:40:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388088927] [2023-11-23 20:40:38,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:38,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 20:40:38,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:38,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 20:40:38,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-11-23 20:40:38,969 INFO L87 Difference]: Start difference. First operand 343 states and 359 transitions. Second operand has 20 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 20:40:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:42,882 INFO L93 Difference]: Finished difference Result 343 states and 359 transitions. [2023-11-23 20:40:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 20:40:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (3), 2 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 109 [2023-11-23 20:40:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:42,884 INFO L225 Difference]: With dead ends: 343 [2023-11-23 20:40:42,884 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 20:40:42,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 227 SyntacticMatches, 74 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2023-11-23 20:40:42,886 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 606 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:42,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 18 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 20:40:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 20:40:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2023-11-23 20:40:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 144 states have (on average 1.0069444444444444) internal successors, (145), 144 states have internal predecessors, (145), 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) [2023-11-23 20:40:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2023-11-23 20:40:42,900 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 109 [2023-11-23 20:40:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:42,900 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2023-11-23 20:40:42,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 20:40:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2023-11-23 20:40:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 20:40:42,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:42,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:42,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:43,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 20:40:43,123 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:40:43,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1468219247, now seen corresponding path program 1 times [2023-11-23 20:40:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178948419] [2023-11-23 20:40:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:43,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:40:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141337636] [2023-11-23 20:40:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:43,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:40:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:43,153 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:40:43,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 20:40:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:43,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:40:43,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 20:40:43,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:40:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 20:40:44,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178948419] [2023-11-23 20:40:44,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 20:40:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141337636] [2023-11-23 20:40:44,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141337636] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:40:44,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1848679928] [2023-11-23 20:40:44,103 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-11-23 20:40:44,103 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:40:44,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:40:44,104 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:40:44,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:40:47,440 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2023-11-23 20:40:47,470 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 55 for LOIs [2023-11-23 20:40:47,496 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:40:59,947 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9880#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 4611686018427387905 (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 4611686018427387904) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-11-23 20:40:59,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:40:59,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 20:40:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-23 20:40:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100865153] [2023-11-23 20:40:59,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 20:40:59,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 20:40:59,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 20:40:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-23 20:40:59,951 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand has 8 states, 7 states have (on average 40.714285714285715) internal successors, (285), 8 states have internal predecessors, (285), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 20:41:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:41:00,807 INFO L93 Difference]: Finished difference Result 388 states and 397 transitions. [2023-11-23 20:41:00,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:41:00,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 40.714285714285715) internal successors, (285), 8 states have internal predecessors, (285), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 154 [2023-11-23 20:41:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:41:00,811 INFO L225 Difference]: With dead ends: 388 [2023-11-23 20:41:00,811 INFO L226 Difference]: Without dead ends: 387 [2023-11-23 20:41:00,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 333 SyntacticMatches, 102 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2023-11-23 20:41:00,812 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 130 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:41:00,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 100 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 20:41:00,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-23 20:41:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-11-23 20:41:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 376 states have (on average 1.002659574468085) internal successors, (377), 376 states have internal predecessors, (377), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:41:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 393 transitions. [2023-11-23 20:41:00,839 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 393 transitions. Word has length 154 [2023-11-23 20:41:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:41:00,840 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 393 transitions. [2023-11-23 20:41:00,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 40.714285714285715) internal successors, (285), 8 states have internal predecessors, (285), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 20:41:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 393 transitions. [2023-11-23 20:41:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-11-23 20:41:00,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:41:00,851 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:41:00,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 20:41:01,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 20:41:01,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 20:41:01,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:41:01,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1453119697, now seen corresponding path program 2 times [2023-11-23 20:41:01,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:41:01,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191265795] [2023-11-23 20:41:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:41:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:41:01,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:41:01,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558522691] [2023-11-23 20:41:01,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 20:41:01,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:41:01,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:41:01,112 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:41:01,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9452ad26-8ab2-437b-9952-48ca8d5eee84/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process