./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/init-4-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-4-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh --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 7e1c46a3eec085decec4254bf9381483b25ba7b6541d5728ae52d1793b9b8c91 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:25:49,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:25:49,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 15:25:49,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:25:49,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:25:49,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:25:49,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:25:49,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:25:49,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:25:49,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:25:49,309 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:25:49,310 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:25:49,310 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:25:49,311 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:25:49,311 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:25:49,312 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:25:49,312 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:25:49,313 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:25:49,313 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:25:49,314 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:25:49,315 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:25:49,315 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:25:49,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:25:49,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:25:49,317 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:25:49,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:25:49,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:25:49,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:25:49,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:25:49,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:25:49,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:25:49,320 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:25:49,320 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:25:49,320 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:25:49,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:25:49,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:25:49,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:25:49,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:25:49,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:25:49,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:25:49,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:25:49,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:25:49,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:25:49,323 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:25:49,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:25:49,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:25:49,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:25:49,324 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:25:49,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:25:49,324 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_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e1c46a3eec085decec4254bf9381483b25ba7b6541d5728ae52d1793b9b8c91 [2023-12-02 15:25:49,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:25:49,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:25:49,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:25:49,548 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:25:49,548 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:25:49,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/array-multidimensional/init-4-n-u.c [2023-12-02 15:25:52,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:25:52,513 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:25:52,514 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/sv-benchmarks/c/array-multidimensional/init-4-n-u.c [2023-12-02 15:25:52,521 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/data/f0f5443b4/b25621ebdd364246be16d941497b7493/FLAG03a6acfcb [2023-12-02 15:25:52,533 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/data/f0f5443b4/b25621ebdd364246be16d941497b7493 [2023-12-02 15:25:52,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:25:52,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:25:52,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:25:52,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:25:52,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:25:52,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3fe108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52, skipping insertion in model container [2023-12-02 15:25:52,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:25:52,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:25:52,719 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:25:52,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:25:52,758 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:25:52,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52 WrapperNode [2023-12-02 15:25:52,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:25:52,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:25:52,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:25:52,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:25:52,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,798 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-12-02 15:25:52,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:25:52,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:25:52,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:25:52,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:25:52,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:25:52,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:25:52,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:25:52,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:25:52,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (1/1) ... [2023-12-02 15:25:52,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:25:52,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:52,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:25:52,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:25:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:25:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:25:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:25:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:25:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:25:52,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:25:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:25:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:25:52,973 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:25:52,975 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:25:53,171 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:25:53,220 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:25:53,221 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-02 15:25:53,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:25:53 BoogieIcfgContainer [2023-12-02 15:25:53,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:25:53,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:25:53,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:25:53,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:25:53,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:25:52" (1/3) ... [2023-12-02 15:25:53,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188f90d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:25:53, skipping insertion in model container [2023-12-02 15:25:53,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:25:52" (2/3) ... [2023-12-02 15:25:53,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188f90d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:25:53, skipping insertion in model container [2023-12-02 15:25:53,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:25:53" (3/3) ... [2023-12-02 15:25:53,232 INFO L112 eAbstractionObserver]: Analyzing ICFG init-4-n-u.c [2023-12-02 15:25:53,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:25:53,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-12-02 15:25:53,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:25:53,312 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;@105f8b1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:25:53,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-12-02 15:25:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 25 states have (on average 1.96) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 15:25:53,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:53,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 15:25:53,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:53,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash 5467313, now seen corresponding path program 1 times [2023-12-02 15:25:53,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:53,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534075838] [2023-12-02 15:25:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:53,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:53,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:53,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915732821] [2023-12-02 15:25:53,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:53,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:53,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:53,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:53,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:25:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:53,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:53,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:53,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:53,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534075838] [2023-12-02 15:25:53,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915732821] [2023-12-02 15:25:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915732821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:53,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:53,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:25:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303884486] [2023-12-02 15:25:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:53,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:53,624 INFO L87 Difference]: Start difference. First operand has 42 states, 25 states have (on average 1.96) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:53,681 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-12-02 15:25:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 15:25:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:53,692 INFO L225 Difference]: With dead ends: 42 [2023-12-02 15:25:53,692 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 15:25:53,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:53,699 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:53,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:53,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 15:25:53,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-02 15:25:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.84) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-12-02 15:25:53,737 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 4 [2023-12-02 15:25:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:53,737 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-12-02 15:25:53,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-12-02 15:25:53,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 15:25:53,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:53,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 15:25:53,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:25:53,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:25:53,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:53,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash 169356370, now seen corresponding path program 1 times [2023-12-02 15:25:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:53,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847583118] [2023-12-02 15:25:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:53,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:53,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:53,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272339554] [2023-12-02 15:25:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:53,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:53,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:53,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:53,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:25:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:54,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:54,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:54,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:54,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:54,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847583118] [2023-12-02 15:25:54,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:54,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272339554] [2023-12-02 15:25:54,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272339554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:54,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:54,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812256043] [2023-12-02 15:25:54,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:54,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:54,025 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:54,065 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2023-12-02 15:25:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:54,065 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 15:25:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:54,066 INFO L225 Difference]: With dead ends: 39 [2023-12-02 15:25:54,067 INFO L226 Difference]: Without dead ends: 37 [2023-12-02 15:25:54,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:54,069 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:54,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-02 15:25:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-02 15:25:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.76) internal successors, (44), 36 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-12-02 15:25:54,077 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2023-12-02 15:25:54,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:54,077 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-12-02 15:25:54,078 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,078 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-12-02 15:25:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 15:25:54,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:54,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 15:25:54,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:25:54,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:54,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:54,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash 169486796, now seen corresponding path program 1 times [2023-12-02 15:25:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:54,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849461049] [2023-12-02 15:25:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:54,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106173892] [2023-12-02 15:25:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:54,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:54,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:54,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:54,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:25:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:54,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:54,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:54,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:54,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:54,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849461049] [2023-12-02 15:25:54,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:54,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106173892] [2023-12-02 15:25:54,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106173892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:54,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:54,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:25:54,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992975076] [2023-12-02 15:25:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:54,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:54,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:54,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:54,364 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:54,420 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2023-12-02 15:25:54,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:54,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 15:25:54,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:54,422 INFO L225 Difference]: With dead ends: 73 [2023-12-02 15:25:54,422 INFO L226 Difference]: Without dead ends: 71 [2023-12-02 15:25:54,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:54,424 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:54,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-02 15:25:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2023-12-02 15:25:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 60 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2023-12-02 15:25:54,436 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 5 [2023-12-02 15:25:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:54,437 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 85 transitions. [2023-12-02 15:25:54,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 85 transitions. [2023-12-02 15:25:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:25:54,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:54,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:25:54,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:25:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:54,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:54,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 955080260, now seen corresponding path program 1 times [2023-12-02 15:25:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:54,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702922234] [2023-12-02 15:25:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:54,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:54,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355116540] [2023-12-02 15:25:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:54,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:54,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:54,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:54,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:25:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:54,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:54,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:54,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:54,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:54,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702922234] [2023-12-02 15:25:54,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355116540] [2023-12-02 15:25:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355116540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:54,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:54,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808333258] [2023-12-02 15:25:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:54,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:54,707 INFO L87 Difference]: Start difference. First operand 61 states and 85 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:54,768 INFO L93 Difference]: Finished difference Result 119 states and 166 transitions. [2023-12-02 15:25:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:54,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:25:54,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:54,770 INFO L225 Difference]: With dead ends: 119 [2023-12-02 15:25:54,771 INFO L226 Difference]: Without dead ends: 117 [2023-12-02 15:25:54,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:54,772 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:54,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 52 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:54,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-02 15:25:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2023-12-02 15:25:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.7529411764705882) internal successors, (149), 96 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 149 transitions. [2023-12-02 15:25:54,793 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 149 transitions. Word has length 6 [2023-12-02 15:25:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:54,793 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 149 transitions. [2023-12-02 15:25:54,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 149 transitions. [2023-12-02 15:25:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:25:54,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:54,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:25:54,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:25:54,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:54,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:54,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash 954954918, now seen corresponding path program 1 times [2023-12-02 15:25:54,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:54,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567736355] [2023-12-02 15:25:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:54,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:55,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:55,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056450939] [2023-12-02 15:25:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:55,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:55,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:55,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:55,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:25:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:55,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:55,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:55,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:55,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:55,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567736355] [2023-12-02 15:25:55,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:55,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056450939] [2023-12-02 15:25:55,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056450939] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:55,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969199538] [2023-12-02 15:25:55,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:55,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:55,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:55,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:55,061 INFO L87 Difference]: Start difference. First operand 97 states and 149 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:55,100 INFO L93 Difference]: Finished difference Result 97 states and 149 transitions. [2023-12-02 15:25:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:55,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:25:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:55,103 INFO L225 Difference]: With dead ends: 97 [2023-12-02 15:25:55,103 INFO L226 Difference]: Without dead ends: 95 [2023-12-02 15:25:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:55,105 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:55,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:55,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-02 15:25:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-02 15:25:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 85 states have (on average 1.6588235294117648) internal successors, (141), 94 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 141 transitions. [2023-12-02 15:25:55,120 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 141 transitions. Word has length 6 [2023-12-02 15:25:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:55,120 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 141 transitions. [2023-12-02 15:25:55,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,121 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 141 transitions. [2023-12-02 15:25:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:25:55,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:55,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:25:55,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 15:25:55,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:55,329 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:55,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 954950974, now seen corresponding path program 1 times [2023-12-02 15:25:55,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:55,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761804242] [2023-12-02 15:25:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:55,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:55,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621079371] [2023-12-02 15:25:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:55,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:55,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:25:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:55,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:55,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:55,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:55,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:55,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761804242] [2023-12-02 15:25:55,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:55,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621079371] [2023-12-02 15:25:55,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621079371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:55,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:55,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577506760] [2023-12-02 15:25:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:55,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:55,397 INFO L87 Difference]: Start difference. First operand 95 states and 141 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:55,434 INFO L93 Difference]: Finished difference Result 95 states and 141 transitions. [2023-12-02 15:25:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:25:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:55,436 INFO L225 Difference]: With dead ends: 95 [2023-12-02 15:25:55,436 INFO L226 Difference]: Without dead ends: 93 [2023-12-02 15:25:55,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:55,437 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:55,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-02 15:25:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-02 15:25:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.5647058823529412) internal successors, (133), 92 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2023-12-02 15:25:55,452 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 6 [2023-12-02 15:25:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:55,452 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2023-12-02 15:25:55,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2023-12-02 15:25:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:25:55,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:55,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:25:55,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:25:55,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:55,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:55,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash -461168535, now seen corresponding path program 1 times [2023-12-02 15:25:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:55,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449129022] [2023-12-02 15:25:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:55,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:55,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:55,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655784058] [2023-12-02 15:25:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:55,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:55,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:55,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:55,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:25:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:55,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:55,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:55,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:55,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449129022] [2023-12-02 15:25:55,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655784058] [2023-12-02 15:25:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655784058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744416159] [2023-12-02 15:25:55,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:55,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:55,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:55,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:55,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:55,717 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:55,778 INFO L93 Difference]: Finished difference Result 179 states and 254 transitions. [2023-12-02 15:25:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:25:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:55,780 INFO L225 Difference]: With dead ends: 179 [2023-12-02 15:25:55,780 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 15:25:55,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:55,781 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:55,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 42 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 15:25:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 141. [2023-12-02 15:25:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 133 states have (on average 1.5413533834586466) internal successors, (205), 140 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 205 transitions. [2023-12-02 15:25:55,802 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 205 transitions. Word has length 7 [2023-12-02 15:25:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:55,802 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 205 transitions. [2023-12-02 15:25:55,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 205 transitions. [2023-12-02 15:25:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:25:55,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:55,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:25:55,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:25:56,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:56,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:56,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash -461290806, now seen corresponding path program 1 times [2023-12-02 15:25:56,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:56,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798629073] [2023-12-02 15:25:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:56,015 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:56,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200878180] [2023-12-02 15:25:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:56,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:56,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:56,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:56,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:25:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:56,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:25:56,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:56,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:56,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798629073] [2023-12-02 15:25:56,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:56,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200878180] [2023-12-02 15:25:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200878180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905736957] [2023-12-02 15:25:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:56,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:56,066 INFO L87 Difference]: Start difference. First operand 141 states and 205 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:56,132 INFO L93 Difference]: Finished difference Result 267 states and 382 transitions. [2023-12-02 15:25:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:56,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:25:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:56,134 INFO L225 Difference]: With dead ends: 267 [2023-12-02 15:25:56,134 INFO L226 Difference]: Without dead ends: 265 [2023-12-02 15:25:56,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:56,136 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:56,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 44 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:56,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-02 15:25:56,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 189. [2023-12-02 15:25:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.4861878453038675) internal successors, (269), 188 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2023-12-02 15:25:56,161 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 7 [2023-12-02 15:25:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:56,161 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2023-12-02 15:25:56,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2023-12-02 15:25:56,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:25:56,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:56,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-12-02 15:25:56,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:25:56,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:56,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:56,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1171400734, now seen corresponding path program 1 times [2023-12-02 15:25:56,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:56,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418278433] [2023-12-02 15:25:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:56,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:56,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:56,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887000242] [2023-12-02 15:25:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:56,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:56,374 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:56,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:25:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:56,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:25:56,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:25:56,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:56,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:56,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418278433] [2023-12-02 15:25:56,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:56,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887000242] [2023-12-02 15:25:56,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887000242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:56,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:56,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:25:56,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776583353] [2023-12-02 15:25:56,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:56,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:25:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:25:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:25:56,457 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:56,519 INFO L93 Difference]: Finished difference Result 338 states and 472 transitions. [2023-12-02 15:25:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:25:56,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 15:25:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:56,520 INFO L225 Difference]: With dead ends: 338 [2023-12-02 15:25:56,520 INFO L226 Difference]: Without dead ends: 193 [2023-12-02 15:25:56,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:25:56,522 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 62 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:56,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 44 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-02 15:25:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2023-12-02 15:25:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.4640883977900552) internal successors, (265), 188 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 265 transitions. [2023-12-02 15:25:56,542 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 265 transitions. Word has length 9 [2023-12-02 15:25:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:56,542 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 265 transitions. [2023-12-02 15:25:56,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,543 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 265 transitions. [2023-12-02 15:25:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:25:56,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:56,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-12-02 15:25:56,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:25:56,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:56,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:56,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash 719730133, now seen corresponding path program 1 times [2023-12-02 15:25:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:56,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921008717] [2023-12-02 15:25:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:56,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:56,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438742651] [2023-12-02 15:25:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:56,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:56,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:56,756 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:56,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:25:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:56,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:25:56,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:25:56,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:25:56,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:56,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921008717] [2023-12-02 15:25:56,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:56,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438742651] [2023-12-02 15:25:56,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438742651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:56,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:56,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:25:56,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000223673] [2023-12-02 15:25:56,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:56,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:25:56,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:56,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:25:56,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:25:56,853 INFO L87 Difference]: Start difference. First operand 189 states and 265 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:56,924 INFO L93 Difference]: Finished difference Result 359 states and 499 transitions. [2023-12-02 15:25:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:25:56,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 15:25:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:56,926 INFO L225 Difference]: With dead ends: 359 [2023-12-02 15:25:56,926 INFO L226 Difference]: Without dead ends: 191 [2023-12-02 15:25:56,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:25:56,928 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 50 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:56,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 42 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:25:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-02 15:25:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2023-12-02 15:25:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 181 states have (on average 1.419889502762431) internal successors, (257), 188 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 257 transitions. [2023-12-02 15:25:56,950 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 257 transitions. Word has length 10 [2023-12-02 15:25:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:56,950 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 257 transitions. [2023-12-02 15:25:56,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 257 transitions. [2023-12-02 15:25:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:25:56,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:56,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 15:25:56,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:25:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:57,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:57,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1581013244, now seen corresponding path program 1 times [2023-12-02 15:25:57,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:57,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494128275] [2023-12-02 15:25:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:57,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:57,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:57,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143227769] [2023-12-02 15:25:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:57,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:57,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:57,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:57,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:25:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:57,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:25:57,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:57,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:25:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:25:57,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:57,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494128275] [2023-12-02 15:25:57,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:57,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143227769] [2023-12-02 15:25:57,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143227769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:25:57,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [556829082] [2023-12-02 15:25:57,279 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-12-02 15:25:57,279 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:25:57,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:25:57,288 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:25:57,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:25:58,071 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:25:58,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [556829082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:58,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:25:58,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2023-12-02 15:25:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487743106] [2023-12-02 15:25:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:58,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:25:58,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:25:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:25:58,441 INFO L87 Difference]: Start difference. First operand 189 states and 257 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:58,707 INFO L93 Difference]: Finished difference Result 368 states and 500 transitions. [2023-12-02 15:25:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:25:58,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 15:25:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:58,709 INFO L225 Difference]: With dead ends: 368 [2023-12-02 15:25:58,709 INFO L226 Difference]: Without dead ends: 189 [2023-12-02 15:25:58,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:25:58,710 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:58,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:25:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-02 15:25:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2023-12-02 15:25:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 179 states have (on average 1.4078212290502794) internal successors, (252), 186 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 252 transitions. [2023-12-02 15:25:58,730 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 252 transitions. Word has length 10 [2023-12-02 15:25:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:58,730 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 252 transitions. [2023-12-02 15:25:58,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:25:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 252 transitions. [2023-12-02 15:25:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 15:25:58,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:58,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:25:58,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:25:58,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:58,932 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:25:58,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:58,932 INFO L85 PathProgramCache]: Analyzing trace with hash 282667173, now seen corresponding path program 1 times [2023-12-02 15:25:58,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:58,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297048738] [2023-12-02 15:25:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:58,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:58,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:25:58,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237988164] [2023-12-02 15:25:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:58,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:58,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:58,940 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:58,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:25:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:58,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:25:58,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:25:59,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:25:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:25:59,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297048738] [2023-12-02 15:25:59,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:25:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237988164] [2023-12-02 15:25:59,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237988164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:25:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737756443] [2023-12-02 15:25:59,045 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 15:25:59,045 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:25:59,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:25:59,046 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:25:59,046 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:25:59,479 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:25:59,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4660#(and (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~l~0#1|) (<= 2147483647 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|))' at error location [2023-12-02 15:25:59,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:25:59,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:25:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 15:25:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021209712] [2023-12-02 15:25:59,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:25:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:25:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:25:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:25:59,932 INFO L87 Difference]: Start difference. First operand 187 states and 252 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:00,059 INFO L93 Difference]: Finished difference Result 482 states and 687 transitions. [2023-12-02 15:26:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:26:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 15:26:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:00,062 INFO L225 Difference]: With dead ends: 482 [2023-12-02 15:26:00,062 INFO L226 Difference]: Without dead ends: 303 [2023-12-02 15:26:00,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:26:00,063 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 110 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:00,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 60 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:26:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-02 15:26:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2023-12-02 15:26:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 293 states have (on average 1.2491467576791808) internal successors, (366), 300 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 366 transitions. [2023-12-02 15:26:00,085 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 366 transitions. Word has length 14 [2023-12-02 15:26:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:00,085 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 366 transitions. [2023-12-02 15:26:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 366 transitions. [2023-12-02 15:26:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 15:26:00,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:00,086 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:00,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:26:00,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:26:00,292 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:00,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash 965848724, now seen corresponding path program 1 times [2023-12-02 15:26:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612761496] [2023-12-02 15:26:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:00,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:00,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:00,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788876546] [2023-12-02 15:26:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:00,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:00,303 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:00,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:26:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:00,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:26:00,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 15:26:00,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 15:26:00,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612761496] [2023-12-02 15:26:00,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788876546] [2023-12-02 15:26:00,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788876546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [868515856] [2023-12-02 15:26:00,528 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 15:26:00,529 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:00,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:00,529 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:00,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:00,926 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:01,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5907#(and (exists ((|v_#memory_int_34| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_34| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_34| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~l~0#1| 4) (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) (* |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) |ULTIMATE.start_main_~C~0#1|)))) (<= 2147483647 |ULTIMATE.start_main_~l~0#1|) (<= (+ |ULTIMATE.start_main_~l~0#1| 1) |ULTIMATE.start_main_~q~0#1|))' at error location [2023-12-02 15:26:01,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:01,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 15:26:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964062088] [2023-12-02 15:26:01,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:01,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:26:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:26:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-12-02 15:26:01,351 INFO L87 Difference]: Start difference. First operand 301 states and 366 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:01,617 INFO L93 Difference]: Finished difference Result 881 states and 1188 transitions. [2023-12-02 15:26:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:26:01,625 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-02 15:26:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:01,629 INFO L225 Difference]: With dead ends: 881 [2023-12-02 15:26:01,629 INFO L226 Difference]: Without dead ends: 597 [2023-12-02 15:26:01,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2023-12-02 15:26:01,631 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 136 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:01,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 60 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:26:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-02 15:26:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 589. [2023-12-02 15:26:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 581 states have (on average 1.2030981067125646) internal successors, (699), 588 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:01,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 699 transitions. [2023-12-02 15:26:01,683 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 699 transitions. Word has length 29 [2023-12-02 15:26:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:01,684 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 699 transitions. [2023-12-02 15:26:01,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 699 transitions. [2023-12-02 15:26:01,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 15:26:01,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:01,686 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:01,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:26:01,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 15:26:01,887 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:01,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:01,887 INFO L85 PathProgramCache]: Analyzing trace with hash 934925682, now seen corresponding path program 2 times [2023-12-02 15:26:01,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:01,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327820698] [2023-12-02 15:26:01,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:01,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:01,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:01,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573852040] [2023-12-02 15:26:01,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:26:01,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:01,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:01,903 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:01,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:26:01,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:26:01,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:26:01,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:26:01,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-12-02 15:26:02,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-12-02 15:26:02,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327820698] [2023-12-02 15:26:02,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573852040] [2023-12-02 15:26:02,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573852040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1434310990] [2023-12-02 15:26:02,093 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 15:26:02,093 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:02,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:02,093 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:02,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:02,532 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1434310990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:02,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:02,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [2, 2] total 11 [2023-12-02 15:26:02,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860193685] [2023-12-02 15:26:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:26:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:26:02,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:26:02,883 INFO L87 Difference]: Start difference. First operand 589 states and 699 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:03,249 INFO L93 Difference]: Finished difference Result 591 states and 699 transitions. [2023-12-02 15:26:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:26:03,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-02 15:26:03,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:03,254 INFO L225 Difference]: With dead ends: 591 [2023-12-02 15:26:03,254 INFO L226 Difference]: Without dead ends: 590 [2023-12-02 15:26:03,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:26:03,255 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:03,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 2 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:26:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-02 15:26:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 589. [2023-12-02 15:26:03,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 581 states have (on average 1.1944922547332186) internal successors, (694), 588 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 694 transitions. [2023-12-02 15:26:03,288 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 694 transitions. Word has length 56 [2023-12-02 15:26:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:03,289 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 694 transitions. [2023-12-02 15:26:03,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 694 transitions. [2023-12-02 15:26:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 15:26:03,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:03,291 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:03,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:26:03,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 15:26:03,495 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:03,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:03,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1716879363, now seen corresponding path program 1 times [2023-12-02 15:26:03,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:03,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666190263] [2023-12-02 15:26:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:03,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:03,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068593664] [2023-12-02 15:26:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:03,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:03,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:03,511 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:03,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:26:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:03,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:26:03,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 189 proven. 145 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 15:26:03,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 189 proven. 145 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 15:26:03,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:03,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666190263] [2023-12-02 15:26:03,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:03,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068593664] [2023-12-02 15:26:03,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068593664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:03,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [764070010] [2023-12-02 15:26:03,978 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 15:26:03,978 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:03,978 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:03,978 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:03,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:04,586 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:04,820 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10217#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (exists ((|v_#memory_int_78| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_78| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_78| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~l~0#1| 4) (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) (* |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) |ULTIMATE.start_main_~C~0#1|)))) (<= 2147483647 |ULTIMATE.start_main_~l~0#1|) (<= (+ |ULTIMATE.start_main_~l~0#1| 1) |ULTIMATE.start_main_~q~0#1|))' at error location [2023-12-02 15:26:04,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:04,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:04,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-02 15:26:04,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192202760] [2023-12-02 15:26:04,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:04,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 15:26:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:04,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 15:26:04,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=890, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 15:26:04,823 INFO L87 Difference]: Start difference. First operand 589 states and 694 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:05,380 INFO L93 Difference]: Finished difference Result 1739 states and 2288 transitions. [2023-12-02 15:26:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 15:26:05,381 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-02 15:26:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:05,388 INFO L225 Difference]: With dead ends: 1739 [2023-12-02 15:26:05,388 INFO L226 Difference]: Without dead ends: 1185 [2023-12-02 15:26:05,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=668, Invalid=1494, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 15:26:05,390 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 280 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:05,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 114 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:26:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-12-02 15:26:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1165. [2023-12-02 15:26:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1157 states have (on average 1.1702679343128781) internal successors, (1354), 1164 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1354 transitions. [2023-12-02 15:26:05,483 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1354 transitions. Word has length 60 [2023-12-02 15:26:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:05,484 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1354 transitions. [2023-12-02 15:26:05,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1354 transitions. [2023-12-02 15:26:05,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 15:26:05,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:05,486 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:26:05,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 15:26:05,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 15:26:05,686 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:05,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:05,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1814578051, now seen corresponding path program 2 times [2023-12-02 15:26:05,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:05,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825540952] [2023-12-02 15:26:05,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:05,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:05,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:05,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949757560] [2023-12-02 15:26:05,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:26:05,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:05,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:05,711 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:05,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 15:26:05,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:26:05,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:26:05,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:26:05,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1655 trivial. 0 not checked. [2023-12-02 15:26:05,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1655 trivial. 0 not checked. [2023-12-02 15:26:06,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825540952] [2023-12-02 15:26:06,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:06,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949757560] [2023-12-02 15:26:06,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949757560] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:06,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022842366] [2023-12-02 15:26:06,063 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 15:26:06,063 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:06,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:06,064 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:06,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:06,662 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:06,887 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14819#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 2147483647 |ULTIMATE.start_main_~l~0#1|) (<= (+ |ULTIMATE.start_main_~l~0#1| 1) |ULTIMATE.start_main_~q~0#1|) (exists ((|v_#memory_int_117| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_117| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_117| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~l~0#1| 4) (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) (* |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~q~0#1| 4)))) |ULTIMATE.start_main_~C~0#1|)))))' at error location [2023-12-02 15:26:06,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:06,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:06,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-12-02 15:26:06,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719460659] [2023-12-02 15:26:06,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:06,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:26:06,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:06,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:26:06,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:26:06,889 INFO L87 Difference]: Start difference. First operand 1165 states and 1354 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:07,026 INFO L93 Difference]: Finished difference Result 1165 states and 1354 transitions. [2023-12-02 15:26:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:26:07,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-02 15:26:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:07,033 INFO L225 Difference]: With dead ends: 1165 [2023-12-02 15:26:07,033 INFO L226 Difference]: Without dead ends: 1163 [2023-12-02 15:26:07,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:26:07,034 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 55 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:07,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 42 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:26:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2023-12-02 15:26:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2023-12-02 15:26:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1157 states have (on average 1.0371650821089022) internal successors, (1200), 1162 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1200 transitions. [2023-12-02 15:26:07,136 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1200 transitions. Word has length 114 [2023-12-02 15:26:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:07,137 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1200 transitions. [2023-12-02 15:26:07,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1200 transitions. [2023-12-02 15:26:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 15:26:07,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:07,139 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 15:26:07,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 15:26:07,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 15:26:07,340 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:07,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1538159245, now seen corresponding path program 2 times [2023-12-02 15:26:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:07,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574387675] [2023-12-02 15:26:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:07,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:07,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71108526] [2023-12-02 15:26:07,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:26:07,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:07,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:07,367 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:07,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:26:07,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:26:07,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:26:07,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:26:07,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2930 backedges. 0 proven. 1499 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-12-02 15:26:07,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2930 backedges. 0 proven. 1499 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2023-12-02 15:26:07,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574387675] [2023-12-02 15:26:07,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71108526] [2023-12-02 15:26:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71108526] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:07,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1745948119] [2023-12-02 15:26:07,737 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 15:26:07,737 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:07,738 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:07,738 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:07,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:08,039 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:08,454 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18810#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~C~0#1| 2147483648)) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~C~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 2147483647 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= 2000 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~j~0#1| 0) (<= 2000 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-12-02 15:26:08,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:08,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-12-02 15:26:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924150249] [2023-12-02 15:26:08,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:08,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:26:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:08,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:26:08,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:26:08,456 INFO L87 Difference]: Start difference. First operand 1163 states and 1200 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:08,581 INFO L93 Difference]: Finished difference Result 1163 states and 1200 transitions. [2023-12-02 15:26:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:26:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2023-12-02 15:26:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:08,588 INFO L225 Difference]: With dead ends: 1163 [2023-12-02 15:26:08,588 INFO L226 Difference]: Without dead ends: 1161 [2023-12-02 15:26:08,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:26:08,589 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 80 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:08,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:26:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-02 15:26:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 609. [2023-12-02 15:26:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 605 states have (on average 1.0446280991735537) internal successors, (632), 608 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 632 transitions. [2023-12-02 15:26:08,674 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 632 transitions. Word has length 143 [2023-12-02 15:26:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:08,674 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 632 transitions. [2023-12-02 15:26:08,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 632 transitions. [2023-12-02 15:26:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-02 15:26:08,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:08,676 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 15:26:08,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-02 15:26:08,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 15:26:08,882 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:08,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1043387263, now seen corresponding path program 1 times [2023-12-02 15:26:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:08,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269244554] [2023-12-02 15:26:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:08,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:08,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891766468] [2023-12-02 15:26:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:08,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:08,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:08,909 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:08,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:26:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:09,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 15:26:09,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2938 backedges. 1501 proven. 715 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-02 15:26:09,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2938 backedges. 1501 proven. 715 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-02 15:26:09,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269244554] [2023-12-02 15:26:09,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891766468] [2023-12-02 15:26:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891766468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:09,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1357403455] [2023-12-02 15:26:09,994 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 15:26:09,994 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:09,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:09,995 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:09,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:10,521 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:10,747 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22144#(and (or (and (<= 2147483648 |ULTIMATE.start_main_~n~0#1|) (= 2147483647 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~l~0#1| 0) (<= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0)) (and (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~l~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|))' at error location [2023-12-02 15:26:10,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:10,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-02 15:26:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893810197] [2023-12-02 15:26:10,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:10,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-02 15:26:10,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:10,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-02 15:26:10,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1263, Invalid=2159, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 15:26:10,752 INFO L87 Difference]: Start difference. First operand 609 states and 632 transitions. Second operand has 50 states, 50 states have (on average 3.08) internal successors, (154), 49 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:12,028 INFO L93 Difference]: Finished difference Result 1790 states and 2028 transitions. [2023-12-02 15:26:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-02 15:26:12,029 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.08) internal successors, (154), 49 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2023-12-02 15:26:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:12,033 INFO L225 Difference]: With dead ends: 1790 [2023-12-02 15:26:12,033 INFO L226 Difference]: Without dead ends: 1185 [2023-12-02 15:26:12,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2062 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2436, Invalid=4206, Unknown=0, NotChecked=0, Total=6642 [2023-12-02 15:26:12,036 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 657 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:12,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 86 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:26:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-12-02 15:26:12,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2023-12-02 15:26:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1181 states have (on average 1.0228619813717188) internal successors, (1208), 1184 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1208 transitions. [2023-12-02 15:26:12,124 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1208 transitions. Word has length 150 [2023-12-02 15:26:12,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:12,124 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1208 transitions. [2023-12-02 15:26:12,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.08) internal successors, (154), 49 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1208 transitions. [2023-12-02 15:26:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-02 15:26:12,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:12,128 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 15:26:12,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 15:26:12,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 15:26:12,329 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:12,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1060371329, now seen corresponding path program 2 times [2023-12-02 15:26:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:12,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710005078] [2023-12-02 15:26:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:12,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:12,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748619854] [2023-12-02 15:26:12,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:26:12,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:12,370 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:12,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 15:26:12,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:26:12,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:26:12,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:26:12,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 0 proven. 6449 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2023-12-02 15:26:12,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 0 proven. 6449 refuted. 0 times theorem prover too weak. 6305 trivial. 0 not checked. [2023-12-02 15:26:13,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710005078] [2023-12-02 15:26:13,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:13,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748619854] [2023-12-02 15:26:13,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748619854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:13,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1492919771] [2023-12-02 15:26:13,010 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2023-12-02 15:26:13,010 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:13,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:13,011 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:13,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:13,639 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:13,876 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27955#(and (or (and (<= 2147483648 |ULTIMATE.start_main_~n~0#1|) (= 2147483647 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~l~0#1| 0) (<= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0)) (and (<= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~l~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~k~0#1|))) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|))' at error location [2023-12-02 15:26:13,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:13,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:13,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-12-02 15:26:13,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821453588] [2023-12-02 15:26:13,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:13,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:26:13,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:13,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:26:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:26:13,878 INFO L87 Difference]: Start difference. First operand 1185 states and 1208 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:14,015 INFO L93 Difference]: Finished difference Result 1185 states and 1208 transitions. [2023-12-02 15:26:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:26:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2023-12-02 15:26:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:14,020 INFO L225 Difference]: With dead ends: 1185 [2023-12-02 15:26:14,020 INFO L226 Difference]: Without dead ends: 1183 [2023-12-02 15:26:14,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:26:14,021 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:14,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:26:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2023-12-02 15:26:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 603. [2023-12-02 15:26:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 601 states have (on average 1.0249584026622296) internal successors, (616), 602 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 616 transitions. [2023-12-02 15:26:14,102 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 616 transitions. Word has length 294 [2023-12-02 15:26:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:14,102 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 616 transitions. [2023-12-02 15:26:14,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 616 transitions. [2023-12-02 15:26:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-02 15:26:14,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:14,106 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 15:26:14,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 15:26:14,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:14,307 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:14,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash -113493548, now seen corresponding path program 1 times [2023-12-02 15:26:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:14,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650035725] [2023-12-02 15:26:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:14,353 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:14,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326700473] [2023-12-02 15:26:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:14,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:14,355 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:14,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:26:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:14,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-02 15:26:14,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12762 backedges. 6448 proven. 3151 refuted. 0 times theorem prover too weak. 3163 trivial. 0 not checked. [2023-12-02 15:26:15,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12762 backedges. 6448 proven. 3151 refuted. 0 times theorem prover too weak. 3163 trivial. 0 not checked. [2023-12-02 15:26:17,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650035725] [2023-12-02 15:26:17,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326700473] [2023-12-02 15:26:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326700473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376695197] [2023-12-02 15:26:17,881 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-12-02 15:26:17,881 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:17,881 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:17,881 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:17,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:21,079 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:22,191 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32266#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~C~0#1| 2147483648)) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~C~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~l~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-12-02 15:26:22,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:22,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-12-02 15:26:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484136711] [2023-12-02 15:26:22,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-02 15:26:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-02 15:26:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4715, Invalid=7057, Unknown=0, NotChecked=0, Total=11772 [2023-12-02 15:26:22,197 INFO L87 Difference]: Start difference. First operand 603 states and 616 transitions. Second operand has 98 states, 98 states have (on average 3.0816326530612246) internal successors, (302), 97 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:27,417 INFO L93 Difference]: Finished difference Result 1779 states and 1997 transitions. [2023-12-02 15:26:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-02 15:26:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.0816326530612246) internal successors, (302), 97 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2023-12-02 15:26:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:27,423 INFO L225 Difference]: With dead ends: 1779 [2023-12-02 15:26:27,424 INFO L226 Difference]: Without dead ends: 1179 [2023-12-02 15:26:27,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6281 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=9321, Invalid=14859, Unknown=0, NotChecked=0, Total=24180 [2023-12-02 15:26:27,432 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1536 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:27,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 76 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:26:27,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2023-12-02 15:26:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1179. [2023-12-02 15:26:27,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1177 states have (on average 1.0127442650807137) internal successors, (1192), 1178 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1192 transitions. [2023-12-02 15:26:27,601 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1192 transitions. Word has length 301 [2023-12-02 15:26:27,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:27,601 INFO L495 AbstractCegarLoop]: Abstraction has 1179 states and 1192 transitions. [2023-12-02 15:26:27,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.0816326530612246) internal successors, (302), 97 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1192 transitions. [2023-12-02 15:26:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-12-02 15:26:27,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:27,605 INFO L195 NwaCegarLoop]: trace histogram [188, 188, 188, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 15:26:27,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 15:26:27,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:27,805 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-12-02 15:26:27,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:27,806 INFO L85 PathProgramCache]: Analyzing trace with hash -446328876, now seen corresponding path program 2 times [2023-12-02 15:26:27,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:27,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178764452] [2023-12-02 15:26:27,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:27,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:27,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:26:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681278111] [2023-12-02 15:26:27,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:26:27,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:27,870 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:27,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:26:28,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:26:28,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:26:28,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:26:28,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 53130 backedges. 0 proven. 26711 refuted. 0 times theorem prover too weak. 26419 trivial. 0 not checked. [2023-12-02 15:26:28,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 53130 backedges. 0 proven. 26711 refuted. 0 times theorem prover too weak. 26419 trivial. 0 not checked. [2023-12-02 15:26:29,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:29,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178764452] [2023-12-02 15:26:29,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:26:29,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681278111] [2023-12-02 15:26:29,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681278111] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:29,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [44795007] [2023-12-02 15:26:29,073 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-12-02 15:26:29,073 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:29,074 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:29,074 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:29,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:31,939 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:32,634 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39869#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~C~0#1| 2147483648)) (= |ULTIMATE.start_main_~m~0#1| 1000) (<= 1500 |ULTIMATE.start_main_~j~0#1|) (<= 2 |ULTIMATE.start_main_~#A~0#1.base|) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= |ULTIMATE.start_main_~C~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~l~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500))' at error location [2023-12-02 15:26:32,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:26:32,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:26:32,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-12-02 15:26:32,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255840433] [2023-12-02 15:26:32,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:26:32,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:26:32,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:26:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:26:32,636 INFO L87 Difference]: Start difference. First operand 1179 states and 1192 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:32,818 INFO L93 Difference]: Finished difference Result 1179 states and 1192 transitions. [2023-12-02 15:26:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:26:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 589 [2023-12-02 15:26:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:32,820 INFO L225 Difference]: With dead ends: 1179 [2023-12-02 15:26:32,820 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:26:32,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1767 GetRequests, 1750 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:26:32,822 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:32,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 16 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:26:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:26:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:26:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:26:32,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 589 [2023-12-02 15:26:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:32,823 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:26:32,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:26:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:26:32,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:26:32,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-12-02 15:26:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-12-02 15:26:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-12-02 15:26:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-12-02 15:26:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-12-02 15:26:32,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-12-02 15:26:32,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-12-02 15:26:32,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-12-02 15:26:32,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:26:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 15:26:33,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:26:46,473 WARN L293 SmtUtils]: Spent 13.41s on a formula simplification. DAG size of input: 974 DAG size of output: 606 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 15:27:01,134 WARN L293 SmtUtils]: Spent 14.61s on a formula simplification. DAG size of input: 1058 DAG size of output: 683 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 15:27:09,414 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2023-12-02 15:27:09,414 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 45) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-12-02 15:27:09,414 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 52 70) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-12-02 15:27:09,414 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW(line 69) no Hoare annotation was computed. [2023-12-02 15:27:09,414 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 39) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1799) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 1499)) [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L895 garLoopResultBuilder]: At program point L61-2(lines 61 64) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1799) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 1499)) [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point L61-3(lines 61 64) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 63) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 63) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed. [2023-12-02 15:27:09,415 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 65) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L895 garLoopResultBuilder]: At program point L31-2(lines 31 43) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point L31-3(lines 31 43) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 68) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 68) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 65) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 42) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW(line 67) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:27:09,416 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 42) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW(line 67) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 41) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 1499)) [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point L34-3(lines 34 41) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L895 garLoopResultBuilder]: At program point L59-2(lines 59 66) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~l~0#1| 2147483646) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1800) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (= 2000 |ULTIMATE.start_main_~q~0#1|) (<= 0 |ULTIMATE.start_main_~l~0#1|) (= |ULTIMATE.start_main_~n~0#1| 1500) (<= |ULTIMATE.start_main_~j~0#1| 1499)) [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point L59-3(lines 59 66) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW(line 69) no Hoare annotation was computed. [2023-12-02 15:27:09,417 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-12-02 15:27:09,421 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:27:09,423 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:27:09,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:27:09 BoogieIcfgContainer [2023-12-02 15:27:09,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:27:09,440 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:27:09,440 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:27:09,440 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:27:09,440 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:25:53" (3/4) ... [2023-12-02 15:27:09,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:27:09,450 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-12-02 15:27:09,450 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-12-02 15:27:09,451 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 15:27:09,451 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:27:09,532 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:27:09,533 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:27:09,533 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:27:09,534 INFO L158 Benchmark]: Toolchain (without parser) took 76997.01ms. Allocated memory was 165.7MB in the beginning and 943.7MB in the end (delta: 778.0MB). Free memory was 125.0MB in the beginning and 822.3MB in the end (delta: -697.3MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2023-12-02 15:27:09,534 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 165.7MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:27:09,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.91ms. Allocated memory is still 165.7MB. Free memory was 125.0MB in the beginning and 114.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:27:09,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.88ms. Allocated memory is still 165.7MB. Free memory was 114.2MB in the beginning and 112.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:27:09,535 INFO L158 Benchmark]: Boogie Preprocessor took 26.88ms. Allocated memory is still 165.7MB. Free memory was 112.4MB in the beginning and 111.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:27:09,535 INFO L158 Benchmark]: RCFGBuilder took 396.40ms. Allocated memory is still 165.7MB. Free memory was 111.2MB in the beginning and 94.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 15:27:09,536 INFO L158 Benchmark]: TraceAbstraction took 76213.65ms. Allocated memory was 165.7MB in the beginning and 943.7MB in the end (delta: 778.0MB). Free memory was 94.2MB in the beginning and 827.6MB in the end (delta: -733.4MB). Peak memory consumption was 543.9MB. Max. memory is 16.1GB. [2023-12-02 15:27:09,536 INFO L158 Benchmark]: Witness Printer took 93.33ms. Allocated memory is still 943.7MB. Free memory was 827.6MB in the beginning and 822.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 15:27:09,538 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 165.7MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.91ms. Allocated memory is still 165.7MB. Free memory was 125.0MB in the beginning and 114.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.88ms. Allocated memory is still 165.7MB. Free memory was 114.2MB in the beginning and 112.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.88ms. Allocated memory is still 165.7MB. Free memory was 112.4MB in the beginning and 111.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 396.40ms. Allocated memory is still 165.7MB. Free memory was 111.2MB in the beginning and 94.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 76213.65ms. Allocated memory was 165.7MB in the beginning and 943.7MB in the end (delta: 778.0MB). Free memory was 94.2MB in the beginning and 827.6MB in the end (delta: -733.4MB). Peak memory consumption was 543.9MB. Max. memory is 16.1GB. * Witness Printer took 93.33ms. Allocated memory is still 943.7MB. Free memory was 827.6MB in the beginning and 822.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 76.1s, OverallIterations: 21, TraceHistogramMax: 188, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 36.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 3323 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3323 mSDsluCounter, 946 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 454 mSDsCounter, 1163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1815 IncrementalHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1163 mSolverCounterUnsat, 492 mSDtfsCounter, 1815 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5412 GetRequests, 5000 SyntacticMatches, 2 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9737 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1185occurred in iteration=18, InterpolantAutomatonStates: 255, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 1313 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 408 NumberOfFragments, 296 HoareAnnotationTreeSize, 8 FomulaSimplifications, 29231 FormulaSimplificationTreeSizeReduction, 28.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 54826 FormulaSimplificationTreeSizeReductionInter, 8.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 1825 NumberOfCodeBlocks, 661 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 3553 ConstructedInterpolants, 0 QuantifiedInterpolants, 11001 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2979 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 32 InterpolantComputations, 10 PerfectInterpolantSequences, 96568/174152 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 61, TOOLS_POST_TIME: 1.0s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 55, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 104, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 129, DAG_COMPRESSION_RETAINED_NODES: 58, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 2147483646)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (k <= 2147483646)) && (2000 == q)) && (j <= 2147483646)) && (0 <= l)) && (n == 1500)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 999)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (k <= 2147483646)) && (2000 == q)) && (0 <= l)) && (n == 1500)) && (j <= 1499)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 999)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (k <= 2147483646)) && (2000 == q)) && (j <= 2147483646)) && (0 <= l)) && (n == 1500)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 999)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (2000 == q)) && (k <= 1799)) && (0 <= l)) && (n == 1500)) && (j <= 1499)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 999)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (k <= 2147483646)) && (2000 == q)) && (0 <= l)) && (n == 1500)) && (j <= 1499)) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 2147483646)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (k <= 2147483646)) && (2000 == q)) && (j <= 2147483646)) && (0 <= l)) && (n == 1500)) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 999)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (k <= 2147483646)) && (2000 == q)) && (j <= 2147483646)) && (0 <= l)) && (n == 1500)) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((((0 <= k) && (m <= 1000)) && (l <= 2147483646)) && (i <= 999)) && (0 <= j)) && (p == 1800)) && (0 <= i)) && (2000 == q)) && (k <= 1799)) && (0 <= l)) && (n == 1500)) && (j <= 1499)) RESULT: Ultimate proved your program to be correct! [2023-12-02 15:27:09,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1ed19dd-28a6-4431-896a-4cad52325f7e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE