./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/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_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/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_51d3c7f3-035e-4167-8f85-76d216528b0c/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 deef9b1f63fa90bdeace0bbb769d25578ef53bda95c70ad5e444555427b2b0e2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:34:54,228 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:34:54,320 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 17:34:54,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:34:54,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:34:54,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:34:54,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:34:54,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:34:54,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:34:54,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:34:54,351 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:34:54,352 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:34:54,352 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:34:54,353 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:34:54,353 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:34:54,354 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:34:54,355 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:34:54,355 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:34:54,356 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:34:54,356 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:34:54,357 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:34:54,360 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:34:54,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:34:54,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:34:54,361 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:34:54,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:34:54,362 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:34:54,362 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:34:54,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:34:54,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:34:54,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:34:54,364 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:34:54,364 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:34:54,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:34:54,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:34:54,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:34:54,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:34:54,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:34:54,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:34:54,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:34:54,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:34:54,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:34:54,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:34:54,366 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:34:54,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:34:54,367 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:34:54,367 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:34:54,367 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:34:54,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:34:54,367 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_51d3c7f3-035e-4167-8f85-76d216528b0c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deef9b1f63fa90bdeace0bbb769d25578ef53bda95c70ad5e444555427b2b0e2 [2023-12-02 17:34:54,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:34:54,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:34:54,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:34:54,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:34:54,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:34:54,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2023-12-02 17:34:57,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:34:57,623 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:34:57,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2023-12-02 17:34:57,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/data/6557d22ac/56f03a4d88e246d495b97c067376b239/FLAGee596244b [2023-12-02 17:34:57,651 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/data/6557d22ac/56f03a4d88e246d495b97c067376b239 [2023-12-02 17:34:57,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:34:57,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:34:57,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:34:57,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:34:57,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:34:57,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:57,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ba81a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57, skipping insertion in model container [2023-12-02 17:34:57,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:57,694 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:34:57,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:34:57,908 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:34:57,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:34:57,952 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:34:57,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57 WrapperNode [2023-12-02 17:34:57,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:34:57,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:34:57,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:34:57,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:34:57,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:57,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,002 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 160 [2023-12-02 17:34:58,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:34:58,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:34:58,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:34:58,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:34:58,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:34:58,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:34:58,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:34:58,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:34:58,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (1/1) ... [2023-12-02 17:34:58,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:34:58,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:58,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:34:58,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:34:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:34:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:34:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:34:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:34:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:34:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:34:58,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:34:58,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:34:58,172 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:34:58,174 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:34:58,636 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:34:58,675 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:34:58,675 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 17:34:58,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:58 BoogieIcfgContainer [2023-12-02 17:34:58,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:34:58,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:34:58,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:34:58,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:34:58,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:34:57" (1/3) ... [2023-12-02 17:34:58,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31de3ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:34:58, skipping insertion in model container [2023-12-02 17:34:58,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:57" (2/3) ... [2023-12-02 17:34:58,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31de3ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:34:58, skipping insertion in model container [2023-12-02 17:34:58,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:58" (3/3) ... [2023-12-02 17:34:58,690 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound50.c [2023-12-02 17:34:58,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:34:58,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-12-02 17:34:58,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:34:58,767 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;@203311db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:34:58,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-12-02 17:34:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 80 states have (on average 1.925) internal successors, (154), 149 states have internal predecessors, (154), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:34:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 17:34:58,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:58,779 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:58,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:34:58,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash -942284691, now seen corresponding path program 1 times [2023-12-02 17:34:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:58,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537581182] [2023-12-02 17:34:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:58,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:58,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:34:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246654392] [2023-12-02 17:34:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:58,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:58,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:58,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:34:58,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:34:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:58,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:34:58,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:34:59,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:34:59,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:59,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537581182] [2023-12-02 17:34:59,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:34:59,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246654392] [2023-12-02 17:34:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246654392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:59,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:59,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:34:59,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026835614] [2023-12-02 17:34:59,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:59,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:34:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:34:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:34:59,137 INFO L87 Difference]: Start difference. First operand has 161 states, 80 states have (on average 1.925) internal successors, (154), 149 states have internal predecessors, (154), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:34:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:59,430 INFO L93 Difference]: Finished difference Result 306 states and 329 transitions. [2023-12-02 17:34:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:34:59,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 9 [2023-12-02 17:34:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:59,443 INFO L225 Difference]: With dead ends: 306 [2023-12-02 17:34:59,443 INFO L226 Difference]: Without dead ends: 155 [2023-12-02 17:34:59,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:34:59,452 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 288 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:59,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 174 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:34:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-02 17:34:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-12-02 17:34:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 79 states have (on average 1.860759493670886) internal successors, (147), 144 states have internal predecessors, (147), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:34:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2023-12-02 17:34:59,501 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 9 [2023-12-02 17:34:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:59,502 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2023-12-02 17:34:59,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 2 states have (on average 2.0) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:34:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2023-12-02 17:34:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:34:59,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:59,504 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:59,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:34:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:59,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:34:59,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash 853945690, now seen corresponding path program 1 times [2023-12-02 17:34:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593658991] [2023-12-02 17:34:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:59,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:59,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:34:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155565108] [2023-12-02 17:34:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:59,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:59,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:59,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:34:59,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:34:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:59,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:34:59,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:34:59,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:34:59,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593658991] [2023-12-02 17:34:59,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:34:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155565108] [2023-12-02 17:34:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155565108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:34:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429801910] [2023-12-02 17:34:59,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:59,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:34:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:59,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:34:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:34:59,853 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand has 5 states, 2 states have (on average 3.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:35:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:00,085 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2023-12-02 17:35:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:35:00,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 2 states have (on average 3.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-12-02 17:35:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:00,089 INFO L225 Difference]: With dead ends: 155 [2023-12-02 17:35:00,089 INFO L226 Difference]: Without dead ends: 154 [2023-12-02 17:35:00,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:00,091 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 282 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:00,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 159 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:35:00,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-02 17:35:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-12-02 17:35:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 79 states have (on average 1.8481012658227849) internal successors, (146), 143 states have internal predecessors, (146), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:35:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2023-12-02 17:35:00,110 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 10 [2023-12-02 17:35:00,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:00,110 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2023-12-02 17:35:00,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 2 states have (on average 3.0) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:35:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2023-12-02 17:35:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:35:00,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:00,112 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:00,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:35:00,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:00,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:00,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:00,317 INFO L85 PathProgramCache]: Analyzing trace with hash -91036862, now seen corresponding path program 1 times [2023-12-02 17:35:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:00,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468984604] [2023-12-02 17:35:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:00,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885758144] [2023-12-02 17:35:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:00,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:00,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:00,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:00,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:35:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:00,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:35:00,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:35:00,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:00,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:00,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468984604] [2023-12-02 17:35:00,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:00,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885758144] [2023-12-02 17:35:00,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885758144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:00,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:00,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:35:00,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622330687] [2023-12-02 17:35:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:00,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:35:00,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:00,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:35:00,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:35:00,445 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:00,491 INFO L93 Difference]: Finished difference Result 193 states and 204 transitions. [2023-12-02 17:35:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:35:00,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2023-12-02 17:35:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:00,494 INFO L225 Difference]: With dead ends: 193 [2023-12-02 17:35:00,494 INFO L226 Difference]: Without dead ends: 192 [2023-12-02 17:35:00,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:00,496 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 40 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:00,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 451 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:35:00,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-02 17:35:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 168. [2023-12-02 17:35:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 91 states have (on average 1.835164835164835) internal successors, (167), 155 states have internal predecessors, (167), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:35:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 187 transitions. [2023-12-02 17:35:00,516 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 187 transitions. Word has length 20 [2023-12-02 17:35:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:00,516 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 187 transitions. [2023-12-02 17:35:00,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 187 transitions. [2023-12-02 17:35:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 17:35:00,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:00,518 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:00,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 17:35:00,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:00,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:00,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:00,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1472824628, now seen corresponding path program 1 times [2023-12-02 17:35:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:00,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523663623] [2023-12-02 17:35:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:00,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:00,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:00,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17512898] [2023-12-02 17:35:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:00,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:00,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:00,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:00,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:35:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:00,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:35:00,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:35:00,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:00,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523663623] [2023-12-02 17:35:00,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:00,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17512898] [2023-12-02 17:35:00,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17512898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:00,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:00,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:35:00,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726907771] [2023-12-02 17:35:00,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:00,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:35:00,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:35:00,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:35:00,846 INFO L87 Difference]: Start difference. First operand 168 states and 187 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:00,884 INFO L93 Difference]: Finished difference Result 196 states and 213 transitions. [2023-12-02 17:35:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:35:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 21 [2023-12-02 17:35:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:00,887 INFO L225 Difference]: With dead ends: 196 [2023-12-02 17:35:00,888 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 17:35:00,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:00,889 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 3 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:00,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 454 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:35:00,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 17:35:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-02 17:35:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 91 states have (on average 1.8131868131868132) internal successors, (165), 155 states have internal predecessors, (165), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:35:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2023-12-02 17:35:00,906 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 185 transitions. Word has length 21 [2023-12-02 17:35:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:00,907 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 185 transitions. [2023-12-02 17:35:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 185 transitions. [2023-12-02 17:35:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 17:35:00,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:00,908 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:00,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:35:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:01,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:01,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash -467344375, now seen corresponding path program 1 times [2023-12-02 17:35:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:01,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404653691] [2023-12-02 17:35:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:01,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398049384] [2023-12-02 17:35:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:01,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:01,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:01,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:01,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:35:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:01,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:35:01,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 17:35:01,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:35:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 17:35:01,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404653691] [2023-12-02 17:35:01,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398049384] [2023-12-02 17:35:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398049384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:35:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [451484396] [2023-12-02 17:35:01,313 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-12-02 17:35:01,313 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:35:01,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:35:01,322 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:35:01,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:35:02,745 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:35:02,747 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [451484396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:35:05,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5] total 18 [2023-12-02 17:35:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673320412] [2023-12-02 17:35:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:05,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 17:35:05,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 17:35:05,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-12-02 17:35:05,106 INFO L87 Difference]: Start difference. First operand 168 states and 185 transitions. Second operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:35:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:06,477 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2023-12-02 17:35:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:35:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2023-12-02 17:35:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:06,479 INFO L225 Difference]: With dead ends: 186 [2023-12-02 17:35:06,479 INFO L226 Difference]: Without dead ends: 159 [2023-12-02 17:35:06,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-12-02 17:35:06,481 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:06,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 583 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:35:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-12-02 17:35:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-12-02 17:35:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 84 states have (on average 1.7976190476190477) internal successors, (151), 147 states have internal predecessors, (151), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:35:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2023-12-02 17:35:06,495 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 24 [2023-12-02 17:35:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:06,496 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2023-12-02 17:35:06,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:35:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2023-12-02 17:35:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 17:35:06,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:06,497 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:06,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:35:06,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:06,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:06,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1602775557, now seen corresponding path program 1 times [2023-12-02 17:35:06,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:06,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220320491] [2023-12-02 17:35:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:06,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:06,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:06,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47323931] [2023-12-02 17:35:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:06,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:06,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:06,713 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:06,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:35:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:06,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:35:06,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:35:06,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:06,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220320491] [2023-12-02 17:35:06,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47323931] [2023-12-02 17:35:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47323931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:06,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:06,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:35:06,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094869525] [2023-12-02 17:35:06,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:06,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:35:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:35:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:06,785 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:06,832 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2023-12-02 17:35:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:35:06,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2023-12-02 17:35:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:06,834 INFO L225 Difference]: With dead ends: 159 [2023-12-02 17:35:06,834 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 17:35:06,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:35:06,836 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 162 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:06,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 441 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:35:06,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 17:35:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-12-02 17:35:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 84 states have (on average 1.7738095238095237) internal successors, (149), 145 states have internal predecessors, (149), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:35:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2023-12-02 17:35:06,846 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 25 [2023-12-02 17:35:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:06,847 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2023-12-02 17:35:06,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2023-12-02 17:35:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 17:35:06,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:06,865 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:06,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:35:07,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:07,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:07,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1853565358, now seen corresponding path program 1 times [2023-12-02 17:35:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797547390] [2023-12-02 17:35:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:07,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:07,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302644163] [2023-12-02 17:35:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:07,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:07,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:07,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:07,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:35:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:07,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:35:07,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:35:07,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:07,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797547390] [2023-12-02 17:35:07,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302644163] [2023-12-02 17:35:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302644163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:07,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:07,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:35:07,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253349778] [2023-12-02 17:35:07,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:07,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:35:07,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:07,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:35:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:07,142 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:07,213 INFO L93 Difference]: Finished difference Result 189 states and 199 transitions. [2023-12-02 17:35:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:35:07,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2023-12-02 17:35:07,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:07,215 INFO L225 Difference]: With dead ends: 189 [2023-12-02 17:35:07,215 INFO L226 Difference]: Without dead ends: 188 [2023-12-02 17:35:07,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:35:07,217 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:07,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 606 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:35:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-02 17:35:07,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 169. [2023-12-02 17:35:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 94 states have (on average 1.7553191489361701) internal successors, (165), 156 states have internal predecessors, (165), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:35:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 185 transitions. [2023-12-02 17:35:07,230 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 185 transitions. Word has length 26 [2023-12-02 17:35:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:07,230 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 185 transitions. [2023-12-02 17:35:07,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:35:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 185 transitions. [2023-12-02 17:35:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 17:35:07,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:07,232 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:07,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 17:35:07,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:07,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:07,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1135116304, now seen corresponding path program 1 times [2023-12-02 17:35:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:07,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951879080] [2023-12-02 17:35:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:07,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:07,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:07,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677697349] [2023-12-02 17:35:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:07,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:07,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:07,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:07,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 17:35:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:07,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:35:07,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 17:35:07,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:35:07,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:07,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951879080] [2023-12-02 17:35:07,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677697349] [2023-12-02 17:35:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677697349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:35:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [731002773] [2023-12-02 17:35:07,656 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 17:35:07,656 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:35:07,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:35:07,656 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:35:07,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:35:08,606 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:35:08,607 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:16,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [731002773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:16,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:35:16,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 22 [2023-12-02 17:35:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280514918] [2023-12-02 17:35:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:16,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 17:35:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 17:35:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-12-02 17:35:16,003 INFO L87 Difference]: Start difference. First operand 169 states and 185 transitions. Second operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:35:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:20,690 INFO L93 Difference]: Finished difference Result 369 states and 442 transitions. [2023-12-02 17:35:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 17:35:20,691 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2023-12-02 17:35:20,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:20,693 INFO L225 Difference]: With dead ends: 369 [2023-12-02 17:35:20,693 INFO L226 Difference]: Without dead ends: 217 [2023-12-02 17:35:20,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-12-02 17:35:20,695 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 39 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:20,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 342 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 17:35:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-02 17:35:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2023-12-02 17:35:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 137 states have (on average 1.5255474452554745) internal successors, (209), 199 states have internal predecessors, (209), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:35:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 237 transitions. [2023-12-02 17:35:20,714 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 237 transitions. Word has length 28 [2023-12-02 17:35:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:20,714 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 237 transitions. [2023-12-02 17:35:20,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:35:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 237 transitions. [2023-12-02 17:35:20,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 17:35:20,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:20,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:20,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 17:35:20,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:20,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:20,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:20,920 INFO L85 PathProgramCache]: Analyzing trace with hash 933668871, now seen corresponding path program 1 times [2023-12-02 17:35:20,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:20,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805613182] [2023-12-02 17:35:20,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:20,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:20,936 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:20,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148867218] [2023-12-02 17:35:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:20,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:20,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:20,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:20,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 17:35:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:21,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:35:21,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:21,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:21,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805613182] [2023-12-02 17:35:21,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148867218] [2023-12-02 17:35:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148867218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:21,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:21,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:35:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952562347] [2023-12-02 17:35:21,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:21,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:35:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:35:21,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:35:21,084 INFO L87 Difference]: Start difference. First operand 216 states and 237 transitions. Second operand has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:21,607 INFO L93 Difference]: Finished difference Result 315 states and 342 transitions. [2023-12-02 17:35:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:35:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2023-12-02 17:35:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:21,609 INFO L225 Difference]: With dead ends: 315 [2023-12-02 17:35:21,609 INFO L226 Difference]: Without dead ends: 307 [2023-12-02 17:35:21,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 17:35:21,611 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 46 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:21,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 247 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:35:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-02 17:35:21,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 268. [2023-12-02 17:35:21,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 185 states have (on average 1.5891891891891892) internal successors, (294), 247 states have internal predecessors, (294), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 17:35:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 330 transitions. [2023-12-02 17:35:21,626 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 330 transitions. Word has length 78 [2023-12-02 17:35:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:21,627 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 330 transitions. [2023-12-02 17:35:21,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 330 transitions. [2023-12-02 17:35:21,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 17:35:21,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:21,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:21,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 17:35:21,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:21,832 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:21,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:21,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1120986244, now seen corresponding path program 1 times [2023-12-02 17:35:21,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:21,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447448792] [2023-12-02 17:35:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:21,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:21,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:21,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992284102] [2023-12-02 17:35:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:21,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:21,846 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:21,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:35:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:21,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:35:21,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:21,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:21,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447448792] [2023-12-02 17:35:21,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992284102] [2023-12-02 17:35:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992284102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:21,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:21,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:35:21,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436217175] [2023-12-02 17:35:21,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:21,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:35:21,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:35:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:35:21,986 INFO L87 Difference]: Start difference. First operand 268 states and 330 transitions. Second operand has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:22,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:22,036 INFO L93 Difference]: Finished difference Result 268 states and 330 transitions. [2023-12-02 17:35:22,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:35:22,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2023-12-02 17:35:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:22,039 INFO L225 Difference]: With dead ends: 268 [2023-12-02 17:35:22,039 INFO L226 Difference]: Without dead ends: 267 [2023-12-02 17:35:22,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 17:35:22,040 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 94 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:22,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 142 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:35:22,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-02 17:35:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-12-02 17:35:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 185 states have (on average 1.5783783783783785) internal successors, (292), 246 states have internal predecessors, (292), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 17:35:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 328 transitions. [2023-12-02 17:35:22,058 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 328 transitions. Word has length 79 [2023-12-02 17:35:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:22,059 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 328 transitions. [2023-12-02 17:35:22,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 328 transitions. [2023-12-02 17:35:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 17:35:22,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:22,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:22,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 17:35:22,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 17:35:22,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:22,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash -390835029, now seen corresponding path program 1 times [2023-12-02 17:35:22,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:22,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544973213] [2023-12-02 17:35:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:22,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:22,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [845987608] [2023-12-02 17:35:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:22,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:22,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:22,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 17:35:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:22,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:35:22,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:22,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:22,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:22,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544973213] [2023-12-02 17:35:22,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:22,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845987608] [2023-12-02 17:35:22,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845987608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:22,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:35:22,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178342473] [2023-12-02 17:35:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:35:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:22,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:35:22,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:35:22,419 INFO L87 Difference]: Start difference. First operand 267 states and 328 transitions. Second operand has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:22,500 INFO L93 Difference]: Finished difference Result 412 states and 489 transitions. [2023-12-02 17:35:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:35:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-12-02 17:35:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:22,503 INFO L225 Difference]: With dead ends: 412 [2023-12-02 17:35:22,504 INFO L226 Difference]: Without dead ends: 411 [2023-12-02 17:35:22,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 17:35:22,505 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 91 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:22,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 260 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:35:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-02 17:35:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 315. [2023-12-02 17:35:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 229 states have (on average 1.6419213973799127) internal successors, (376), 290 states have internal predecessors, (376), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 17:35:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 420 transitions. [2023-12-02 17:35:22,547 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 420 transitions. Word has length 80 [2023-12-02 17:35:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:22,548 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 420 transitions. [2023-12-02 17:35:22,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 420 transitions. [2023-12-02 17:35:22,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 17:35:22,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:22,550 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:22,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 17:35:22,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 17:35:22,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:22,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:22,751 INFO L85 PathProgramCache]: Analyzing trace with hash -392374231, now seen corresponding path program 1 times [2023-12-02 17:35:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:22,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529548948] [2023-12-02 17:35:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:22,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:22,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040568673] [2023-12-02 17:35:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:22,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:22,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:22,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 17:35:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:22,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:35:22,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:22,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:22,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529548948] [2023-12-02 17:35:22,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040568673] [2023-12-02 17:35:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040568673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:22,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:35:22,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799523824] [2023-12-02 17:35:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:35:22,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:35:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:22,899 INFO L87 Difference]: Start difference. First operand 315 states and 420 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:23,112 INFO L93 Difference]: Finished difference Result 353 states and 424 transitions. [2023-12-02 17:35:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:35:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2023-12-02 17:35:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:23,116 INFO L225 Difference]: With dead ends: 353 [2023-12-02 17:35:23,116 INFO L226 Difference]: Without dead ends: 352 [2023-12-02 17:35:23,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:23,117 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 42 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:23,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 501 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:35:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-02 17:35:23,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 316. [2023-12-02 17:35:23,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 230 states have (on average 1.6391304347826088) internal successors, (377), 291 states have internal predecessors, (377), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 17:35:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 421 transitions. [2023-12-02 17:35:23,134 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 421 transitions. Word has length 80 [2023-12-02 17:35:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:23,134 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 421 transitions. [2023-12-02 17:35:23,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 421 transitions. [2023-12-02 17:35:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 17:35:23,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:23,135 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:23,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 17:35:23,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 17:35:23,336 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:23,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash 721300906, now seen corresponding path program 1 times [2023-12-02 17:35:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944696046] [2023-12-02 17:35:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:23,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:23,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356387592] [2023-12-02 17:35:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:23,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:23,346 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:23,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:35:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:23,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:35:23,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:23,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:23,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944696046] [2023-12-02 17:35:23,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356387592] [2023-12-02 17:35:23,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356387592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:23,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:23,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:35:23,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758896121] [2023-12-02 17:35:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:23,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:35:23,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:35:23,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:35:23,572 INFO L87 Difference]: Start difference. First operand 316 states and 421 transitions. Second operand has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:24,264 INFO L93 Difference]: Finished difference Result 352 states and 423 transitions. [2023-12-02 17:35:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:35:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2023-12-02 17:35:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:24,266 INFO L225 Difference]: With dead ends: 352 [2023-12-02 17:35:24,267 INFO L226 Difference]: Without dead ends: 351 [2023-12-02 17:35:24,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:24,267 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 43 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:24,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 316 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 17:35:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-02 17:35:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 317. [2023-12-02 17:35:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 231 states have (on average 1.6363636363636365) internal successors, (378), 292 states have internal predecessors, (378), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 17:35:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 422 transitions. [2023-12-02 17:35:24,284 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 422 transitions. Word has length 81 [2023-12-02 17:35:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:24,284 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 422 transitions. [2023-12-02 17:35:24,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 422 transitions. [2023-12-02 17:35:24,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 17:35:24,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:24,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:24,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:35:24,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 17:35:24,486 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:24,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash 885491787, now seen corresponding path program 1 times [2023-12-02 17:35:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042306151] [2023-12-02 17:35:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:24,497 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:24,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850910587] [2023-12-02 17:35:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:24,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:24,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:24,499 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:24,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 17:35:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:24,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:35:24,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:24,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:24,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:24,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042306151] [2023-12-02 17:35:24,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:24,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850910587] [2023-12-02 17:35:24,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850910587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:24,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:24,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:35:24,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640028096] [2023-12-02 17:35:24,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:24,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:35:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:35:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:35:24,753 INFO L87 Difference]: Start difference. First operand 317 states and 422 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:35:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:24,906 INFO L93 Difference]: Finished difference Result 359 states and 430 transitions. [2023-12-02 17:35:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:35:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 82 [2023-12-02 17:35:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:24,909 INFO L225 Difference]: With dead ends: 359 [2023-12-02 17:35:24,910 INFO L226 Difference]: Without dead ends: 358 [2023-12-02 17:35:24,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 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 17:35:24,911 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 99 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:24,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 220 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:35:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-12-02 17:35:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 318. [2023-12-02 17:35:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 232 states have (on average 1.6336206896551724) internal successors, (379), 293 states have internal predecessors, (379), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 17:35:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 423 transitions. [2023-12-02 17:35:24,935 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 423 transitions. Word has length 82 [2023-12-02 17:35:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:24,936 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 423 transitions. [2023-12-02 17:35:24,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:35:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 423 transitions. [2023-12-02 17:35:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 17:35:24,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:24,937 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:24,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 17:35:25,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 17:35:25,140 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:25,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash 290059100, now seen corresponding path program 1 times [2023-12-02 17:35:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:25,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443414127] [2023-12-02 17:35:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:25,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:25,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94046938] [2023-12-02 17:35:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:25,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:25,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:25,156 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:25,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 17:35:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:25,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:35:25,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:25,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:35:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:25,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443414127] [2023-12-02 17:35:25,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94046938] [2023-12-02 17:35:25,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94046938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:35:25,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070782547] [2023-12-02 17:35:25,480 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 17:35:25,480 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:35:25,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:35:25,481 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:35:25,482 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:35:35,118 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:35:35,119 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:35:35,121 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:53,042 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10360#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~xy~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 9223372036854775807) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= |ULTIMATE.start_main_~yy~0#1| 2147483646) (<= 1 |ULTIMATE.start_main_~b~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2147483647) (<= 1 |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~b~0#1|)) (= |ULTIMATE.start_main_~s~0#1| 1))' at error location [2023-12-02 17:35:53,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:35:53,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:35:53,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 17:35:53,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826523431] [2023-12-02 17:35:53,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:35:53,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:35:53,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:35:53,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1456, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 17:35:53,046 INFO L87 Difference]: Start difference. First operand 318 states and 423 transitions. Second operand has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 12 states have internal predecessors, (113), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 17:35:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:53,381 INFO L93 Difference]: Finished difference Result 742 states and 894 transitions. [2023-12-02 17:35:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 17:35:53,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 12 states have internal predecessors, (113), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 83 [2023-12-02 17:35:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:53,387 INFO L225 Difference]: With dead ends: 742 [2023-12-02 17:35:53,387 INFO L226 Difference]: Without dead ends: 741 [2023-12-02 17:35:53,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 192 SyntacticMatches, 17 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=465, Invalid=2397, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 17:35:53,389 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 627 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:53,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1248 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:35:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2023-12-02 17:35:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 526. [2023-12-02 17:35:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 421 states have (on average 1.7102137767220902) internal successors, (720), 482 states have internal predecessors, (720), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 17:35:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 796 transitions. [2023-12-02 17:35:53,428 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 796 transitions. Word has length 83 [2023-12-02 17:35:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:53,429 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 796 transitions. [2023-12-02 17:35:53,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 12 states have internal predecessors, (113), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 17:35:53,429 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 796 transitions. [2023-12-02 17:35:53,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 17:35:53,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:53,430 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:53,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 17:35:53,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 17:35:53,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:53,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1680441804, now seen corresponding path program 1 times [2023-12-02 17:35:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031850629] [2023-12-02 17:35:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:53,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:53,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306885098] [2023-12-02 17:35:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:53,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:53,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 17:35:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:53,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:35:53,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:53,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:53,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:53,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031850629] [2023-12-02 17:35:53,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306885098] [2023-12-02 17:35:53,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306885098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:53,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:35:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433213740] [2023-12-02 17:35:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:53,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:35:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:35:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:35:53,839 INFO L87 Difference]: Start difference. First operand 526 states and 796 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:35:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:54,017 INFO L93 Difference]: Finished difference Result 578 states and 814 transitions. [2023-12-02 17:35:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:35:54,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 83 [2023-12-02 17:35:54,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:54,022 INFO L225 Difference]: With dead ends: 578 [2023-12-02 17:35:54,023 INFO L226 Difference]: Without dead ends: 577 [2023-12-02 17:35:54,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 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 17:35:54,024 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 117 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:54,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 238 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:35:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-02 17:35:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 533. [2023-12-02 17:35:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 428 states have (on average 1.6985981308411215) internal successors, (727), 489 states have internal predecessors, (727), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 17:35:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 803 transitions. [2023-12-02 17:35:54,059 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 803 transitions. Word has length 83 [2023-12-02 17:35:54,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:54,060 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 803 transitions. [2023-12-02 17:35:54,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:35:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 803 transitions. [2023-12-02 17:35:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 17:35:54,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:54,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:54,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 17:35:54,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 17:35:54,262 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:54,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash 554088557, now seen corresponding path program 1 times [2023-12-02 17:35:54,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:54,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222860990] [2023-12-02 17:35:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:54,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:54,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534864868] [2023-12-02 17:35:54,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:54,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:54,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:54,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:54,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 17:35:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:54,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:35:54,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:35:54,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:54,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:54,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222860990] [2023-12-02 17:35:54,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:54,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534864868] [2023-12-02 17:35:54,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534864868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:54,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:35:54,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:35:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322825510] [2023-12-02 17:35:54,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:54,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:35:54,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:54,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:35:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:54,414 INFO L87 Difference]: Start difference. First operand 533 states and 803 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:54,584 INFO L93 Difference]: Finished difference Result 573 states and 809 transitions. [2023-12-02 17:35:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:35:54,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2023-12-02 17:35:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:54,589 INFO L225 Difference]: With dead ends: 573 [2023-12-02 17:35:54,589 INFO L226 Difference]: Without dead ends: 572 [2023-12-02 17:35:54,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:35:54,590 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 45 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:54,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 419 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:35:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-02 17:35:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 535. [2023-12-02 17:35:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 430 states have (on average 1.697674418604651) internal successors, (730), 491 states have internal predecessors, (730), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 17:35:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 806 transitions. [2023-12-02 17:35:54,623 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 806 transitions. Word has length 84 [2023-12-02 17:35:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:54,624 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 806 transitions. [2023-12-02 17:35:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:35:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 806 transitions. [2023-12-02 17:35:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 17:35:54,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:54,625 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:54,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 17:35:54,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 17:35:54,826 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:35:54,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:54,826 INFO L85 PathProgramCache]: Analyzing trace with hash -426076642, now seen corresponding path program 1 times [2023-12-02 17:35:54,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:54,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394156658] [2023-12-02 17:35:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:54,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:54,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:35:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735612414] [2023-12-02 17:35:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:54,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:54,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:54,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:54,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 17:35:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:54,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 17:35:54,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 17:35:55,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:35:55,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394156658] [2023-12-02 17:35:55,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:35:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735612414] [2023-12-02 17:35:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735612414] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:35:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131087172] [2023-12-02 17:35:55,126 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 17:35:55,126 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:35:55,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:35:55,127 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:35:55,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:36:03,504 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:36:03,505 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:36:03,506 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:36:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1131087172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:36:18,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:36:18,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [6] total 37 [2023-12-02 17:36:18,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976344979] [2023-12-02 17:36:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:36:18,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 17:36:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:36:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 17:36:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1216, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 17:36:18,169 INFO L87 Difference]: Start difference. First operand 535 states and 806 transitions. Second operand has 33 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 26 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:36:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:36:32,875 INFO L93 Difference]: Finished difference Result 592 states and 825 transitions. [2023-12-02 17:36:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 17:36:32,876 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 26 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 85 [2023-12-02 17:36:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:36:32,878 INFO L225 Difference]: With dead ends: 592 [2023-12-02 17:36:32,878 INFO L226 Difference]: Without dead ends: 561 [2023-12-02 17:36:32,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 124 SyntacticMatches, 18 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=654, Invalid=2316, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 17:36:32,880 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 203 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:36:32,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 536 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-12-02 17:36:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-02 17:36:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 438. [2023-12-02 17:36:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 339 states have (on average 1.5870206489675516) internal successors, (538), 400 states have internal predecessors, (538), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 17:36:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 598 transitions. [2023-12-02 17:36:32,910 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 598 transitions. Word has length 85 [2023-12-02 17:36:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:36:32,910 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 598 transitions. [2023-12-02 17:36:32,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 26 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:36:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 598 transitions. [2023-12-02 17:36:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 17:36:32,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:36:32,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:36:32,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 17:36:33,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 17:36:33,112 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:36:33,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:36:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash -3123730, now seen corresponding path program 1 times [2023-12-02 17:36:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:36:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574294406] [2023-12-02 17:36:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:36:33,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:36:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486695749] [2023-12-02 17:36:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:33,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:33,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:36:33,121 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:36:33,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 17:36:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:36:33,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:36:33,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:36:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:36:33,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:36:33,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:36:33,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574294406] [2023-12-02 17:36:33,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:36:33,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486695749] [2023-12-02 17:36:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486695749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:36:33,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:36:33,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:36:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284358579] [2023-12-02 17:36:33,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:36:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:36:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:36:33,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:36:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:36:33,416 INFO L87 Difference]: Start difference. First operand 438 states and 598 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:36:33,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:36:33,690 INFO L93 Difference]: Finished difference Result 444 states and 600 transitions. [2023-12-02 17:36:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:36:33,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2023-12-02 17:36:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:36:33,694 INFO L225 Difference]: With dead ends: 444 [2023-12-02 17:36:33,694 INFO L226 Difference]: Without dead ends: 443 [2023-12-02 17:36:33,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:36:33,695 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 26 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:36:33,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 275 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:36:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-12-02 17:36:33,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 439. [2023-12-02 17:36:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 340 states have (on average 1.5852941176470587) internal successors, (539), 401 states have internal predecessors, (539), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 17:36:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 599 transitions. [2023-12-02 17:36:33,718 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 599 transitions. Word has length 85 [2023-12-02 17:36:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:36:33,718 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 599 transitions. [2023-12-02 17:36:33,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:36:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 599 transitions. [2023-12-02 17:36:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 17:36:33,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:36:33,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:36:33,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 17:36:33,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:33,920 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:36:33,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:36:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -323473932, now seen corresponding path program 1 times [2023-12-02 17:36:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:36:33,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183484884] [2023-12-02 17:36:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:36:33,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:36:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141014236] [2023-12-02 17:36:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:33,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:33,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:36:33,931 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:36:33,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:36:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:36:33,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 17:36:33,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:36:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 17:36:34,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:36:34,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:36:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183484884] [2023-12-02 17:36:34,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:36:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141014236] [2023-12-02 17:36:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141014236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:36:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509310638] [2023-12-02 17:36:34,444 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 17:36:34,444 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:36:34,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:36:34,444 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:36:34,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:36:42,680 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:36:42,681 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:36:42,682 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:36:56,131 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17776#(and (<= 9223372036854775808 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)) (<= ~counter~0 50) (exists ((v_~counter~0_35 Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~yy~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2147483647) (= ~counter~0 (+ v_~counter~0_35 1)) (= (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= 3 ~counter~0) (= |ULTIMATE.start_main_~s~0#1| 1))))' at error location [2023-12-02 17:36:56,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:36:56,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:36:56,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 17:36:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086747242] [2023-12-02 17:36:56,131 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:36:56,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 17:36:56,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:36:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 17:36:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 17:36:56,133 INFO L87 Difference]: Start difference. First operand 439 states and 599 transitions. Second operand has 9 states, 6 states have (on average 10.833333333333334) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:36:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:36:57,896 INFO L93 Difference]: Finished difference Result 495 states and 658 transitions. [2023-12-02 17:36:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:36:57,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 10.833333333333334) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2023-12-02 17:36:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:36:57,900 INFO L225 Difference]: With dead ends: 495 [2023-12-02 17:36:57,900 INFO L226 Difference]: Without dead ends: 493 [2023-12-02 17:36:57,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 123 SyntacticMatches, 18 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=471, Invalid=1785, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 17:36:57,901 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 440 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:36:57,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 368 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 17:36:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-02 17:36:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 488. [2023-12-02 17:36:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 385 states have (on average 1.5246753246753246) internal successors, (587), 446 states have internal predecessors, (587), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 17:36:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 655 transitions. [2023-12-02 17:36:57,936 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 655 transitions. Word has length 86 [2023-12-02 17:36:57,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:36:57,937 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 655 transitions. [2023-12-02 17:36:57,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 10.833333333333334) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:36:57,937 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 655 transitions. [2023-12-02 17:36:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 17:36:57,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:36:57,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:36:57,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 17:36:58,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:58,140 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:36:58,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:36:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1620800650, now seen corresponding path program 1 times [2023-12-02 17:36:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:36:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939442175] [2023-12-02 17:36:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:36:58,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:36:58,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406765049] [2023-12-02 17:36:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:36:58,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:36:58,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:36:58,151 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:36:58,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 17:36:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:36:58,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:36:58,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:36:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:36:58,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:37:00,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:00,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939442175] [2023-12-02 17:37:00,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:37:00,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406765049] [2023-12-02 17:37:00,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406765049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:37:00,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [501884870] [2023-12-02 17:37:00,436 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2023-12-02 17:37:00,436 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:37:00,436 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:37:00,436 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:37:00,436 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:37:08,675 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:37:08,676 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:37:08,677 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:37:27,878 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19216#(and (<= 9223372036854775808 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (exists ((v_~counter~0_42 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 (+ v_~counter~0_42 1)) (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~xy~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~yy~0#1| 2147483646) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~xy~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2147483647) (<= 1 |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= 3 ~counter~0) (= |ULTIMATE.start_main_~s~0#1| 1))) (<= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|) 9223372036854775807) (<= ~counter~0 50))' at error location [2023-12-02 17:37:27,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:37:27,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:37:27,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 17:37:27,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078808241] [2023-12-02 17:37:27,878 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:37:27,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:37:27,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:37:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1378, Unknown=1, NotChecked=0, Total=1722 [2023-12-02 17:37:27,879 INFO L87 Difference]: Start difference. First operand 488 states and 655 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:37:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:28,398 INFO L93 Difference]: Finished difference Result 551 states and 716 transitions. [2023-12-02 17:37:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:37:28,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-12-02 17:37:28,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:28,402 INFO L225 Difference]: With dead ends: 551 [2023-12-02 17:37:28,402 INFO L226 Difference]: Without dead ends: 550 [2023-12-02 17:37:28,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 19 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=438, Invalid=1817, Unknown=1, NotChecked=0, Total=2256 [2023-12-02 17:37:28,404 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 529 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:28,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 452 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:37:28,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-02 17:37:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 488. [2023-12-02 17:37:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 385 states have (on average 1.5220779220779221) internal successors, (586), 446 states have internal predecessors, (586), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 17:37:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 654 transitions. [2023-12-02 17:37:28,428 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 654 transitions. Word has length 88 [2023-12-02 17:37:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:28,428 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 654 transitions. [2023-12-02 17:37:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:37:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 654 transitions. [2023-12-02 17:37:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 17:37:28,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:28,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:28,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 17:37:28,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:37:28,629 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:37:28,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1430289798, now seen corresponding path program 1 times [2023-12-02 17:37:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114696964] [2023-12-02 17:37:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:28,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:37:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41327268] [2023-12-02 17:37:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:28,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:37:28,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:37:28,640 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:37:28,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 17:37:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:28,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:37:28,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:37:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:37:28,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:37:28,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114696964] [2023-12-02 17:37:28,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:37:28,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41327268] [2023-12-02 17:37:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41327268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:37:28,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:37:28,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:37:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587494906] [2023-12-02 17:37:28,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:37:28,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:37:28,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:37:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:37:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:37:28,784 INFO L87 Difference]: Start difference. First operand 488 states and 654 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:37:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:37:28,911 INFO L93 Difference]: Finished difference Result 568 states and 690 transitions. [2023-12-02 17:37:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:37:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2023-12-02 17:37:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:37:28,914 INFO L225 Difference]: With dead ends: 568 [2023-12-02 17:37:28,914 INFO L226 Difference]: Without dead ends: 567 [2023-12-02 17:37:28,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:37:28,914 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 142 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:37:28,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 909 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:37:28,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-12-02 17:37:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 502. [2023-12-02 17:37:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 399 states have (on average 1.5238095238095237) internal successors, (608), 460 states have internal predecessors, (608), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-02 17:37:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 676 transitions. [2023-12-02 17:37:28,940 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 676 transitions. Word has length 88 [2023-12-02 17:37:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:37:28,940 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 676 transitions. [2023-12-02 17:37:28,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:37:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 676 transitions. [2023-12-02 17:37:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 17:37:28,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:37:28,941 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:37:28,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 17:37:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 17:37:29,143 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:37:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:37:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash 118963117, now seen corresponding path program 1 times [2023-12-02 17:37:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:37:29,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733158587] [2023-12-02 17:37:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:37:29,161 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:37:29,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987949692] [2023-12-02 17:37:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:37:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:37:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:37:29,164 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:37:29,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 17:37:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:37:29,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:37:29,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:37:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:37:29,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:37:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:37:29,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:37:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733158587] [2023-12-02 17:37:29,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:37:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987949692] [2023-12-02 17:37:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987949692] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:37:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [878882568] [2023-12-02 17:37:29,439 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-12-02 17:37:29,439 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:37:29,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:37:29,440 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:37:29,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:37:49,568 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:37:49,569 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:37:49,570 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:38:13,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [878882568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:13,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:38:13,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [7, 8] total 36 [2023-12-02 17:38:13,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582922750] [2023-12-02 17:38:13,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:13,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 17:38:13,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:13,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 17:38:13,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 17:38:13,181 INFO L87 Difference]: Start difference. First operand 502 states and 676 transitions. Second operand has 24 states, 18 states have (on average 3.611111111111111) internal successors, (65), 19 states have internal predecessors, (65), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 17:38:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:22,425 INFO L93 Difference]: Finished difference Result 879 states and 1259 transitions. [2023-12-02 17:38:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 17:38:22,426 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.611111111111111) internal successors, (65), 19 states have internal predecessors, (65), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 90 [2023-12-02 17:38:22,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:22,428 INFO L225 Difference]: With dead ends: 879 [2023-12-02 17:38:22,428 INFO L226 Difference]: Without dead ends: 563 [2023-12-02 17:38:22,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 192 SyntacticMatches, 43 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=272, Invalid=1134, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 17:38:22,431 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 6 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:22,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 317 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-12-02 17:38:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-12-02 17:38:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 554. [2023-12-02 17:38:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 447 states have (on average 1.4697986577181208) internal successors, (657), 508 states have internal predecessors, (657), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 17:38:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 733 transitions. [2023-12-02 17:38:22,462 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 733 transitions. Word has length 90 [2023-12-02 17:38:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:22,462 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 733 transitions. [2023-12-02 17:38:22,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.611111111111111) internal successors, (65), 19 states have internal predecessors, (65), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 17:38:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 733 transitions. [2023-12-02 17:38:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 17:38:22,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:22,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:22,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 17:38:22,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:22,664 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:38:22,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:22,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1410162401, now seen corresponding path program 1 times [2023-12-02 17:38:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:22,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311593602] [2023-12-02 17:38:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:22,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:22,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:22,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676225448] [2023-12-02 17:38:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:22,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:22,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:22,676 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:22,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 17:38:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:22,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:38:22,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:38:22,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:38:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:38:22,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311593602] [2023-12-02 17:38:22,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676225448] [2023-12-02 17:38:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676225448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:38:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310691649] [2023-12-02 17:38:22,933 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2023-12-02 17:38:22,933 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:38:22,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:38:22,934 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:38:22,934 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:38:31,085 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:38:31,085 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:38:31,086 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:38:45,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1310691649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:38:45,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:38:45,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [7, 8] total 48 [2023-12-02 17:38:45,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743970884] [2023-12-02 17:38:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:38:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 17:38:45,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:38:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 17:38:45,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1892, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 17:38:45,563 INFO L87 Difference]: Start difference. First operand 554 states and 733 transitions. Second operand has 36 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 29 states have internal predecessors, (66), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:38:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:38:58,518 INFO L93 Difference]: Finished difference Result 584 states and 759 transitions. [2023-12-02 17:38:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-02 17:38:58,518 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 29 states have internal predecessors, (66), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 91 [2023-12-02 17:38:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:38:58,521 INFO L225 Difference]: With dead ends: 584 [2023-12-02 17:38:58,521 INFO L226 Difference]: Without dead ends: 583 [2023-12-02 17:38:58,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 208 SyntacticMatches, 17 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=578, Invalid=3204, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 17:38:58,523 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 294 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:38:58,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 466 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-12-02 17:38:58,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-02 17:38:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 561. [2023-12-02 17:38:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 454 states have (on average 1.4625550660792952) internal successors, (664), 515 states have internal predecessors, (664), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 17:38:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 740 transitions. [2023-12-02 17:38:58,569 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 740 transitions. Word has length 91 [2023-12-02 17:38:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:38:58,569 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 740 transitions. [2023-12-02 17:38:58,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 29 states have internal predecessors, (66), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 17:38:58,570 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 740 transitions. [2023-12-02 17:38:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 17:38:58,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:38:58,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:38:58,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 17:38:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:58,771 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:38:58,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:38:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash 504661393, now seen corresponding path program 1 times [2023-12-02 17:38:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:38:58,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140983499] [2023-12-02 17:38:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:38:58,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:38:58,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131900731] [2023-12-02 17:38:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:38:58,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:38:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:38:58,782 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:38:58,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 17:38:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:38:58,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:38:58,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:38:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:38:58,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:38:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:38:59,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:38:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140983499] [2023-12-02 17:38:59,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:38:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131900731] [2023-12-02 17:38:59,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131900731] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:38:59,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [965152837] [2023-12-02 17:38:59,032 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2023-12-02 17:38:59,032 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:38:59,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:38:59,032 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:38:59,032 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:39:12,065 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:39:12,066 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:39:12,067 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:39:20,131 WARN L293 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 175 DAG size of output: 130 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:39:30,626 WARN L293 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 180 DAG size of output: 134 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:39:37,210 WARN L293 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 162 DAG size of output: 129 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:39:47,189 WARN L293 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 167 DAG size of output: 133 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:39:59,688 WARN L293 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 138 DAG size of output: 53 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:40:06,037 WARN L293 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 143 DAG size of output: 56 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:40:24,950 WARN L293 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 160 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:40:42,169 WARN L293 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 168 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:40:52,215 WARN L293 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 173 DAG size of output: 124 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:41:16,810 WARN L293 SmtUtils]: Spent 23.87s on a formula simplification. DAG size of input: 176 DAG size of output: 128 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:41:37,793 WARN L293 SmtUtils]: Spent 20.17s on a formula simplification. DAG size of input: 177 DAG size of output: 129 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:42:00,871 WARN L293 SmtUtils]: Spent 21.73s on a formula simplification. DAG size of input: 179 DAG size of output: 131 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:42:12,830 WARN L293 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 181 DAG size of output: 133 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:42:47,663 WARN L293 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 56 DAG size of output: 46 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:43:30,323 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26481#(and (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|))) (<= (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~k~0#1| 9223372036854775807) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775808)) (<= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|)) (+ 9223372036854775807 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~s~0#1|)) (<= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775808 (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|))) (= ~counter~0 2147483647) (<= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|)) 9223372036854775807) (<= 0 (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775808 (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|))) (<= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|)) (+ 9223372036854775807 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|)) (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~k~0#1|)) (<= |ULTIMATE.start_main_~s~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~c~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775807) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|)) (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775808)) (<= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~p~0#1|))))' at error location [2023-12-02 17:43:30,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:43:30,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:43:30,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-02 17:43:30,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036526683] [2023-12-02 17:43:30,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:43:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:43:30,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:43:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:43:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=5221, Unknown=0, NotChecked=0, Total=6480 [2023-12-02 17:43:30,327 INFO L87 Difference]: Start difference. First operand 561 states and 740 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 17:43:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:43:30,742 INFO L93 Difference]: Finished difference Result 1185 states and 1537 transitions. [2023-12-02 17:43:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 17:43:30,742 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 96 [2023-12-02 17:43:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:43:30,746 INFO L225 Difference]: With dead ends: 1185 [2023-12-02 17:43:30,746 INFO L226 Difference]: Without dead ends: 860 [2023-12-02 17:43:30,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4360 ImplicationChecksByTransitivity, 258.5s TimeCoverageRelationStatistics Valid=1394, Invalid=7348, Unknown=0, NotChecked=0, Total=8742 [2023-12-02 17:43:30,750 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 191 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:43:30,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1648 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:43:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-12-02 17:43:30,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 748. [2023-12-02 17:43:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 626 states have (on average 1.4073482428115016) internal successors, (881), 687 states have internal predecessors, (881), 50 states have call successors, (50), 11 states have call predecessors, (50), 11 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 17:43:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 981 transitions. [2023-12-02 17:43:30,812 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 981 transitions. Word has length 96 [2023-12-02 17:43:30,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:43:30,812 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 981 transitions. [2023-12-02 17:43:30,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 17:43:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 981 transitions. [2023-12-02 17:43:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 17:43:30,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:43:30,814 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:43:30,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-02 17:43:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:31,019 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:43:31,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:43:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1922527266, now seen corresponding path program 1 times [2023-12-02 17:43:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:43:31,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612545694] [2023-12-02 17:43:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:31,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:43:31,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:43:31,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993042598] [2023-12-02 17:43:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:31,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:31,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:43:31,033 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:43:31,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 17:43:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:43:31,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:43:31,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:43:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-02 17:43:31,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:43:31,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:43:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612545694] [2023-12-02 17:43:31,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:43:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993042598] [2023-12-02 17:43:31,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993042598] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:43:31,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [162402090] [2023-12-02 17:43:31,477 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2023-12-02 17:43:31,477 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:43:31,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:43:31,477 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:43:31,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:43:40,043 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:43:40,044 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:43:40,045 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:43:55,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29326#(and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~yy~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~a~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) (<= (+ |ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (<= 9223372036854775808 |ULTIMATE.start_main_~k~0#1|))' at error location [2023-12-02 17:43:55,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:43:55,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:43:55,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-12-02 17:43:55,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175302481] [2023-12-02 17:43:55,829 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:43:55,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:43:55,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:43:55,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:43:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 17:43:55,831 INFO L87 Difference]: Start difference. First operand 748 states and 981 transitions. Second operand has 5 states, 4 states have (on average 26.5) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 17:43:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:43:56,080 INFO L93 Difference]: Finished difference Result 753 states and 981 transitions. [2023-12-02 17:43:56,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:43:56,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.5) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 140 [2023-12-02 17:43:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:43:56,084 INFO L225 Difference]: With dead ends: 753 [2023-12-02 17:43:56,084 INFO L226 Difference]: Without dead ends: 752 [2023-12-02 17:43:56,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 275 SyntacticMatches, 30 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 17:43:56,086 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 93 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:43:56,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 350 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:43:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-02 17:43:56,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 748. [2023-12-02 17:43:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 626 states have (on average 1.4057507987220448) internal successors, (880), 687 states have internal predecessors, (880), 50 states have call successors, (50), 11 states have call predecessors, (50), 11 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 17:43:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 980 transitions. [2023-12-02 17:43:56,126 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 980 transitions. Word has length 140 [2023-12-02 17:43:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:43:56,126 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 980 transitions. [2023-12-02 17:43:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.5) internal successors, (106), 5 states have internal predecessors, (106), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 17:43:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 980 transitions. [2023-12-02 17:43:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 17:43:56,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:43:56,127 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:43:56,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 17:43:56,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 17:43:56,327 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:43:56,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:43:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -847343966, now seen corresponding path program 2 times [2023-12-02 17:43:56,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:43:56,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484787349] [2023-12-02 17:43:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:43:56,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:43:56,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:43:56,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865502143] [2023-12-02 17:43:56,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:43:56,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:43:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:43:56,338 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:43:56,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 17:43:56,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 17:43:56,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:43:56,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:43:56,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:43:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-02 17:43:59,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:43:59,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:43:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484787349] [2023-12-02 17:43:59,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:43:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865502143] [2023-12-02 17:43:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865502143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:43:59,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:43:59,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:43:59,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383078465] [2023-12-02 17:43:59,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:43:59,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:43:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:43:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:43:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:43:59,485 INFO L87 Difference]: Start difference. First operand 748 states and 980 transitions. Second operand has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 17:44:00,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:44:00,002 INFO L93 Difference]: Finished difference Result 787 states and 982 transitions. [2023-12-02 17:44:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:44:00,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 143 [2023-12-02 17:44:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:44:00,006 INFO L225 Difference]: With dead ends: 787 [2023-12-02 17:44:00,006 INFO L226 Difference]: Without dead ends: 786 [2023-12-02 17:44:00,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:44:00,007 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 237 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:44:00,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 426 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:44:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-02 17:44:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 747. [2023-12-02 17:44:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 626 states have (on average 1.3945686900958467) internal successors, (873), 686 states have internal predecessors, (873), 50 states have call successors, (50), 11 states have call predecessors, (50), 11 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 17:44:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 973 transitions. [2023-12-02 17:44:00,066 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 973 transitions. Word has length 143 [2023-12-02 17:44:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:44:00,066 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 973 transitions. [2023-12-02 17:44:00,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.333333333333332) internal successors, (104), 7 states have internal predecessors, (104), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 17:44:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 973 transitions. [2023-12-02 17:44:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 17:44:00,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:44:00,067 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:44:00,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 17:44:00,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 17:44:00,268 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:44:00,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:44:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1746237604, now seen corresponding path program 2 times [2023-12-02 17:44:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:44:00,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768561471] [2023-12-02 17:44:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:44:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:44:00,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:44:00,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524144981] [2023-12-02 17:44:00,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:44:00,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:44:00,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:44:00,279 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:44:00,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 17:44:00,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 17:44:00,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:44:00,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:44:00,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:44:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-02 17:44:00,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:44:00,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:44:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768561471] [2023-12-02 17:44:00,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:44:00,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524144981] [2023-12-02 17:44:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524144981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:44:00,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:44:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:44:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264976426] [2023-12-02 17:44:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:44:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:44:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:44:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:44:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:44:00,405 INFO L87 Difference]: Start difference. First operand 747 states and 973 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:44:00,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:44:00,553 INFO L93 Difference]: Finished difference Result 750 states and 974 transitions. [2023-12-02 17:44:00,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:44:00,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 145 [2023-12-02 17:44:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:44:00,557 INFO L225 Difference]: With dead ends: 750 [2023-12-02 17:44:00,557 INFO L226 Difference]: Without dead ends: 749 [2023-12-02 17:44:00,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:44:00,558 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 47 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:44:00,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 285 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:44:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-02 17:44:00,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 747. [2023-12-02 17:44:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 626 states have (on average 1.3865814696485623) internal successors, (868), 686 states have internal predecessors, (868), 50 states have call successors, (50), 11 states have call predecessors, (50), 11 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 17:44:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 968 transitions. [2023-12-02 17:44:00,613 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 968 transitions. Word has length 145 [2023-12-02 17:44:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:44:00,613 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 968 transitions. [2023-12-02 17:44:00,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 17:44:00,614 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 968 transitions. [2023-12-02 17:44:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-02 17:44:00,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:44:00,615 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:44:00,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 17:44:00,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 17:44:00,815 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-12-02 17:44:00,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:44:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2131685751, now seen corresponding path program 1 times [2023-12-02 17:44:00,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:44:00,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851644816] [2023-12-02 17:44:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:44:00,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:44:00,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:44:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143800942] [2023-12-02 17:44:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:44:00,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:44:00,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:44:00,830 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:44:00,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51d3c7f3-035e-4167-8f85-76d216528b0c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 17:44:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:44:00,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:44:00,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:44:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-02 17:44:01,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:44:03,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:44:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851644816] [2023-12-02 17:44:03,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:44:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143800942] [2023-12-02 17:44:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143800942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:44:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1150326694] [2023-12-02 17:44:04,001 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2023-12-02 17:44:04,001 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:44:04,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:44:04,001 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:44:04,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:44:14,499 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 70 for LOIs [2023-12-02 17:44:14,523 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:44:14,524 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:44:50,203 WARN L293 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 75 DAG size of output: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:45:02,455 WARN L293 SmtUtils]: Spent 11.09s on a formula simplification. DAG size of input: 78 DAG size of output: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:45:18,238 WARN L293 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 81 DAG size of output: 68 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:45:29,670 WARN L293 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 83 DAG size of output: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:45:52,541 WARN L293 SmtUtils]: Spent 12.01s on a formula simplification. DAG size of input: 85 DAG size of output: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:46:11,396 WARN L293 SmtUtils]: Spent 14.77s on a formula simplification. DAG size of input: 87 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:46:48,353 WARN L293 SmtUtils]: Spent 20.99s on a formula simplification. DAG size of input: 89 DAG size of output: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:47:05,856 WARN L293 SmtUtils]: Spent 16.22s on a formula simplification. DAG size of input: 90 DAG size of output: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:47:27,185 WARN L293 SmtUtils]: Spent 19.03s on a formula simplification. DAG size of input: 92 DAG size of output: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:48:17,913 WARN L293 SmtUtils]: Spent 16.73s on a formula simplification. DAG size of input: 91 DAG size of output: 68 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:48:40,298 WARN L293 SmtUtils]: Spent 21.43s on a formula simplification. DAG size of input: 92 DAG size of output: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:49:00,072 WARN L293 SmtUtils]: Spent 18.88s on a formula simplification. DAG size of input: 95 DAG size of output: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:49:19,490 WARN L293 SmtUtils]: Spent 18.33s on a formula simplification. DAG size of input: 96 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:49:45,161 WARN L293 SmtUtils]: Spent 22.52s on a formula simplification. DAG size of input: 98 DAG size of output: 75 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)