./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.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_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/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_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/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_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/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 2b1a58ad3e10b615d95cc8c02ce2afb54c727e6977a5f6eabd49347a082a7a12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:01:34,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:01:34,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 13:01:34,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:01:34,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:01:34,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:01:34,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:01:34,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:01:34,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:01:34,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:01:34,657 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:01:34,657 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:01:34,658 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:01:34,658 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:01:34,659 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:01:34,659 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:01:34,660 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:01:34,660 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:01:34,661 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:01:34,661 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:01:34,662 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:01:34,663 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:01:34,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:01:34,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:01:34,664 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:01:34,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:01:34,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:01:34,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:01:34,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:01:34,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:01:34,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:01:34,667 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 13:01:34,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:01:34,668 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:01:34,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:01:34,668 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:01:34,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:01:34,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:01:34,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:01:34,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:01:34,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:01:34,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:01:34,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:01:34,670 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:01:34,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:01:34,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:01:34,671 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:01:34,671 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:01:34,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:01:34,671 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_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b1a58ad3e10b615d95cc8c02ce2afb54c727e6977a5f6eabd49347a082a7a12 [2023-12-02 13:01:34,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:01:34,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:01:34,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:01:34,931 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:01:34,932 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:01:34,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.c [2023-12-02 13:01:37,727 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:01:37,913 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:01:37,913 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound100.c [2023-12-02 13:01:37,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/data/4de0c3f25/52fd3ca72339430fabe778ee0a0e72e2/FLAG8656cb905 [2023-12-02 13:01:37,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/data/4de0c3f25/52fd3ca72339430fabe778ee0a0e72e2 [2023-12-02 13:01:37,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:01:37,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:01:37,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:01:37,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:01:37,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:01:37,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:01:37" (1/1) ... [2023-12-02 13:01:37,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b25c391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:37, skipping insertion in model container [2023-12-02 13:01:37,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:01:37" (1/1) ... [2023-12-02 13:01:37,972 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:01:38,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:01:38,164 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:01:38,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:01:38,198 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:01:38,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38 WrapperNode [2023-12-02 13:01:38,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:01:38,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:01:38,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:01:38,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:01:38,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,243 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-12-02 13:01:38,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:01:38,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:01:38,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:01:38,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:01:38,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:01:38,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:01:38,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:01:38,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:01:38,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (1/1) ... [2023-12-02 13:01:38,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:01:38,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:38,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:01:38,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:01:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:01:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:01:38,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:01:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:01:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:01:38,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:01:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:01:38,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:01:38,412 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:01:38,414 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:01:38,754 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:01:38,782 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:01:38,782 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:01:38,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:01:38 BoogieIcfgContainer [2023-12-02 13:01:38,784 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:01:38,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:01:38,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:01:38,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:01:38,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:01:37" (1/3) ... [2023-12-02 13:01:38,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506892fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:01:38, skipping insertion in model container [2023-12-02 13:01:38,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:01:38" (2/3) ... [2023-12-02 13:01:38,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506892fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:01:38, skipping insertion in model container [2023-12-02 13:01:38,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:01:38" (3/3) ... [2023-12-02 13:01:38,793 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound100.c [2023-12-02 13:01:38,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:01:38,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-12-02 13:01:38,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:01:38,860 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;@64fba12e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:01:38,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-12-02 13:01:38,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 95 states have internal predecessors, (100), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 13:01:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 13:01:38,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:38,870 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:38,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:38,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash -849835587, now seen corresponding path program 1 times [2023-12-02 13:01:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233139623] [2023-12-02 13:01:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:38,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:38,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:38,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52610044] [2023-12-02 13:01:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:38,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:38,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:38,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:38,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:01:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:39,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:01:39,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:01:39,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:39,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233139623] [2023-12-02 13:01:39,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52610044] [2023-12-02 13:01:39,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52610044] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:01:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [24274544] [2023-12-02 13:01:39,577 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-12-02 13:01:39,578 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:39,580 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:39,585 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:39,585 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:01:40,130 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:01:40,133 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [24274544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:40,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:01:40,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 13 [2023-12-02 13:01:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735832017] [2023-12-02 13:01:40,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:40,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:01:40,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:01:40,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-12-02 13:01:40,643 INFO L87 Difference]: Start difference. First operand has 104 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 95 states have internal predecessors, (100), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:01:41,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:41,267 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2023-12-02 13:01:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:01:41,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2023-12-02 13:01:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:41,280 INFO L225 Difference]: With dead ends: 159 [2023-12-02 13:01:41,280 INFO L226 Difference]: Without dead ends: 119 [2023-12-02 13:01:41,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-12-02 13:01:41,288 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 378 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:41,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 131 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:01:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-12-02 13:01:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-12-02 13:01:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 110 states have internal predecessors, (117), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 13:01:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2023-12-02 13:01:41,341 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 14 [2023-12-02 13:01:41,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:41,342 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2023-12-02 13:01:41,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:01:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2023-12-02 13:01:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 13:01:41,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:41,345 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 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 13:01:41,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:01:41,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:41,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:41,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash -627355117, now seen corresponding path program 1 times [2023-12-02 13:01:41,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:41,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118810521] [2023-12-02 13:01:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:41,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:41,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:41,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623673830] [2023-12-02 13:01:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:41,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:41,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:41,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:41,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:01:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:41,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:01:41,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:01:41,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:41,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:41,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118810521] [2023-12-02 13:01:41,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:41,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623673830] [2023-12-02 13:01:41,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623673830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:41,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:41,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:01:41,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655613926] [2023-12-02 13:01:41,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:41,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:01:41,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:41,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:01:41,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:01:41,695 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:43,206 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2023-12-02 13:01:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:01:43,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2023-12-02 13:01:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:43,209 INFO L225 Difference]: With dead ends: 297 [2023-12-02 13:01:43,209 INFO L226 Difference]: Without dead ends: 208 [2023-12-02 13:01:43,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:01:43,212 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 234 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:43,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 123 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 13:01:43,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-02 13:01:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 161. [2023-12-02 13:01:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 114 states have (on average 1.6578947368421053) internal successors, (189), 150 states have internal predecessors, (189), 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 13:01:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 205 transitions. [2023-12-02 13:01:43,237 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 205 transitions. Word has length 29 [2023-12-02 13:01:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:43,237 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 205 transitions. [2023-12-02 13:01:43,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 205 transitions. [2023-12-02 13:01:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 13:01:43,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:43,239 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 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 13:01:43,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:01:43,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:43,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:43,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2040218986, now seen corresponding path program 1 times [2023-12-02 13:01:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:43,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615521429] [2023-12-02 13:01:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:43,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:43,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979567106] [2023-12-02 13:01:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:43,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:43,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:43,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:43,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:01:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:43,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:01:43,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:01:43,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:43,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615521429] [2023-12-02 13:01:43,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979567106] [2023-12-02 13:01:43,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979567106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:43,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:01:43,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755011757] [2023-12-02 13:01:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:01:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:01:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:01:43,591 INFO L87 Difference]: Start difference. First operand 161 states and 205 transitions. Second operand has 5 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:01:43,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:43,924 INFO L93 Difference]: Finished difference Result 214 states and 262 transitions. [2023-12-02 13:01:43,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:01:43,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-12-02 13:01:43,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:43,928 INFO L225 Difference]: With dead ends: 214 [2023-12-02 13:01:43,928 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 13:01:43,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:01:43,930 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 163 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:43,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 167 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:01:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 13:01:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 180. [2023-12-02 13:01:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 132 states have (on average 1.6742424242424243) internal successors, (221), 168 states have internal predecessors, (221), 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 13:01:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2023-12-02 13:01:43,954 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 30 [2023-12-02 13:01:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:43,955 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2023-12-02 13:01:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:01:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2023-12-02 13:01:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 13:01:43,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:43,957 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 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 13:01:43,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:01:44,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:44,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:44,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2026827932, now seen corresponding path program 1 times [2023-12-02 13:01:44,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75062649] [2023-12-02 13:01:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:44,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446549990] [2023-12-02 13:01:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:44,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:44,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:44,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:44,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:01:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:44,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:01:44,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:01:44,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:44,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:44,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75062649] [2023-12-02 13:01:44,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:44,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446549990] [2023-12-02 13:01:44,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446549990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:44,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:44,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:01:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103824241] [2023-12-02 13:01:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:01:44,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:01:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:01:44,297 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:44,986 INFO L93 Difference]: Finished difference Result 302 states and 376 transitions. [2023-12-02 13:01:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:01:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2023-12-02 13:01:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:44,988 INFO L225 Difference]: With dead ends: 302 [2023-12-02 13:01:44,988 INFO L226 Difference]: Without dead ends: 214 [2023-12-02 13:01:44,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:01:44,990 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 198 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:44,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 81 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:01:44,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-02 13:01:45,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 189. [2023-12-02 13:01:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 143 states have (on average 1.6573426573426573) internal successors, (237), 176 states have internal predecessors, (237), 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 13:01:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 257 transitions. [2023-12-02 13:01:45,012 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 257 transitions. Word has length 30 [2023-12-02 13:01:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:45,013 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 257 transitions. [2023-12-02 13:01:45,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 257 transitions. [2023-12-02 13:01:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:01:45,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:45,014 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 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 13:01:45,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:01:45,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:45,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:45,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1164329724, now seen corresponding path program 1 times [2023-12-02 13:01:45,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:45,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591655064] [2023-12-02 13:01:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:45,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:45,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:45,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275078886] [2023-12-02 13:01:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:45,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:45,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:45,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:45,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:01:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:45,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:01:45,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:01:45,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:45,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:45,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591655064] [2023-12-02 13:01:45,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:45,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275078886] [2023-12-02 13:01:45,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275078886] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:01:45,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767090964] [2023-12-02 13:01:45,489 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-12-02 13:01:45,489 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:45,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:45,490 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:45,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:01:46,124 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 49 for LOIs [2023-12-02 13:01:46,136 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:01:46,138 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1767090964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:47,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:01:47,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 20 [2023-12-02 13:01:47,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822226735] [2023-12-02 13:01:47,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:47,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 13:01:47,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 13:01:47,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:01:47,968 INFO L87 Difference]: Start difference. First operand 189 states and 257 transitions. Second operand has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:01:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:48,556 INFO L93 Difference]: Finished difference Result 201 states and 268 transitions. [2023-12-02 13:01:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 13:01:48,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2023-12-02 13:01:48,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:48,558 INFO L225 Difference]: With dead ends: 201 [2023-12-02 13:01:48,558 INFO L226 Difference]: Without dead ends: 197 [2023-12-02 13:01:48,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:01:48,560 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 196 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:48,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 232 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:01:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-02 13:01:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-12-02 13:01:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 150 states have (on average 1.6266666666666667) internal successors, (244), 183 states have internal predecessors, (244), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 13:01:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 264 transitions. [2023-12-02 13:01:48,578 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 264 transitions. Word has length 31 [2023-12-02 13:01:48,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:48,579 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 264 transitions. [2023-12-02 13:01:48,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:01:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 264 transitions. [2023-12-02 13:01:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:01:48,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:48,581 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 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 13:01:48,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:01:48,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:48,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:48,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1177720778, now seen corresponding path program 1 times [2023-12-02 13:01:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:48,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874411978] [2023-12-02 13:01:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:48,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:48,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439429484] [2023-12-02 13:01:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:48,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:48,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:48,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:48,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:01:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:48,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:01:48,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:01:48,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:48,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874411978] [2023-12-02 13:01:48,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439429484] [2023-12-02 13:01:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439429484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062659968] [2023-12-02 13:01:48,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:48,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:01:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:01:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:01:48,905 INFO L87 Difference]: Start difference. First operand 197 states and 264 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:49,225 INFO L93 Difference]: Finished difference Result 304 states and 392 transitions. [2023-12-02 13:01:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:01:49,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2023-12-02 13:01:49,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:49,228 INFO L225 Difference]: With dead ends: 304 [2023-12-02 13:01:49,228 INFO L226 Difference]: Without dead ends: 301 [2023-12-02 13:01:49,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:01:49,229 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 214 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:49,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 72 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:01:49,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-02 13:01:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 265. [2023-12-02 13:01:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 216 states have (on average 1.6435185185185186) internal successors, (355), 249 states have internal predecessors, (355), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:01:49,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 379 transitions. [2023-12-02 13:01:49,250 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 379 transitions. Word has length 31 [2023-12-02 13:01:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:49,250 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 379 transitions. [2023-12-02 13:01:49,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 379 transitions. [2023-12-02 13:01:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 13:01:49,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:49,251 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 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 13:01:49,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:01:49,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:49,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:49,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2145361644, now seen corresponding path program 1 times [2023-12-02 13:01:49,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:49,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553114456] [2023-12-02 13:01:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:49,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:49,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:49,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840453774] [2023-12-02 13:01:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:49,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:49,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:49,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:49,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:01:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:49,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:01:49,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:01:49,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:49,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:49,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553114456] [2023-12-02 13:01:49,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:49,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840453774] [2023-12-02 13:01:49,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840453774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:49,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:49,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:49,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646914653] [2023-12-02 13:01:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:49,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:01:49,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:01:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:01:49,562 INFO L87 Difference]: Start difference. First operand 265 states and 379 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:01:50,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:50,094 INFO L93 Difference]: Finished difference Result 364 states and 493 transitions. [2023-12-02 13:01:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:01:50,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-12-02 13:01:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:50,097 INFO L225 Difference]: With dead ends: 364 [2023-12-02 13:01:50,098 INFO L226 Difference]: Without dead ends: 363 [2023-12-02 13:01:50,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 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 13:01:50,099 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 62 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:50,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 189 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:01:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-02 13:01:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 296. [2023-12-02 13:01:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 246 states have (on average 1.6341463414634145) internal successors, (402), 279 states have internal predecessors, (402), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 13:01:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 428 transitions. [2023-12-02 13:01:50,114 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 428 transitions. Word has length 32 [2023-12-02 13:01:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:50,114 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 428 transitions. [2023-12-02 13:01:50,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:01:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 428 transitions. [2023-12-02 13:01:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 13:01:50,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:50,115 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 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 13:01:50,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:01:50,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:50,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:50,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:50,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1815195802, now seen corresponding path program 1 times [2023-12-02 13:01:50,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:50,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036516585] [2023-12-02 13:01:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:50,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:50,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:50,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912615733] [2023-12-02 13:01:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:50,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:50,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:50,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:01:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:50,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:01:50,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:01:50,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:50,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:50,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036516585] [2023-12-02 13:01:50,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:50,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912615733] [2023-12-02 13:01:50,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912615733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:50,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:50,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:01:50,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426381562] [2023-12-02 13:01:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:50,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:01:50,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:01:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:01:50,479 INFO L87 Difference]: Start difference. First operand 296 states and 428 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:52,125 INFO L93 Difference]: Finished difference Result 497 states and 697 transitions. [2023-12-02 13:01:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:01:52,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2023-12-02 13:01:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:52,128 INFO L225 Difference]: With dead ends: 497 [2023-12-02 13:01:52,128 INFO L226 Difference]: Without dead ends: 490 [2023-12-02 13:01:52,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:01:52,129 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 348 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:52,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 70 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 13:01:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-02 13:01:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 425. [2023-12-02 13:01:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 370 states have (on average 1.6189189189189188) internal successors, (599), 403 states have internal predecessors, (599), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:01:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 635 transitions. [2023-12-02 13:01:52,156 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 635 transitions. Word has length 33 [2023-12-02 13:01:52,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:52,156 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 635 transitions. [2023-12-02 13:01:52,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:52,157 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 635 transitions. [2023-12-02 13:01:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 13:01:52,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:52,158 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 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 13:01:52,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 13:01:52,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:52,360 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:52,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:52,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2081701624, now seen corresponding path program 1 times [2023-12-02 13:01:52,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:52,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971292273] [2023-12-02 13:01:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:52,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458993168] [2023-12-02 13:01:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:52,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:52,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:52,371 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:52,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:01:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:52,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:01:52,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:01:52,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:52,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971292273] [2023-12-02 13:01:52,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458993168] [2023-12-02 13:01:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458993168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:52,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:52,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:01:52,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532788675] [2023-12-02 13:01:52,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:52,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:01:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:01:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:01:52,466 INFO L87 Difference]: Start difference. First operand 425 states and 635 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:01:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:52,833 INFO L93 Difference]: Finished difference Result 477 states and 677 transitions. [2023-12-02 13:01:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:01:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-12-02 13:01:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:52,837 INFO L225 Difference]: With dead ends: 477 [2023-12-02 13:01:52,837 INFO L226 Difference]: Without dead ends: 476 [2023-12-02 13:01:52,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 13:01:52,838 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 54 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:52,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 192 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:01:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-02 13:01:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 427. [2023-12-02 13:01:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 372 states have (on average 1.6155913978494623) internal successors, (601), 405 states have internal predecessors, (601), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:01:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 637 transitions. [2023-12-02 13:01:52,861 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 637 transitions. Word has length 33 [2023-12-02 13:01:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:52,862 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 637 transitions. [2023-12-02 13:01:52,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:01:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 637 transitions. [2023-12-02 13:01:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 13:01:52,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:52,863 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 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 13:01:52,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:01:53,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:53,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:53,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:53,064 INFO L85 PathProgramCache]: Analyzing trace with hash -436494883, now seen corresponding path program 1 times [2023-12-02 13:01:53,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:53,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126787523] [2023-12-02 13:01:53,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:53,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281459301] [2023-12-02 13:01:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:53,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:53,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:53,074 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:53,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:01:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:53,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:01:53,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:01:53,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:53,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:53,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126787523] [2023-12-02 13:01:53,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:53,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281459301] [2023-12-02 13:01:53,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281459301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:53,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:53,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:01:53,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959600605] [2023-12-02 13:01:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:53,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:01:53,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:01:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:01:53,205 INFO L87 Difference]: Start difference. First operand 427 states and 637 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:53,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:53,742 INFO L93 Difference]: Finished difference Result 456 states and 673 transitions. [2023-12-02 13:01:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:01:53,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2023-12-02 13:01:53,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:53,745 INFO L225 Difference]: With dead ends: 456 [2023-12-02 13:01:53,745 INFO L226 Difference]: Without dead ends: 451 [2023-12-02 13:01:53,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:01:53,747 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 302 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:53,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 48 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:01:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-02 13:01:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 422. [2023-12-02 13:01:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 372 states have (on average 1.543010752688172) internal successors, (574), 400 states have internal predecessors, (574), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:01:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 610 transitions. [2023-12-02 13:01:53,780 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 610 transitions. Word has length 34 [2023-12-02 13:01:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:53,780 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 610 transitions. [2023-12-02 13:01:53,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:01:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 610 transitions. [2023-12-02 13:01:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 13:01:53,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:53,781 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:53,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 13:01:53,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:53,982 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:01:53,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:53,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1600957952, now seen corresponding path program 1 times [2023-12-02 13:01:53,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:01:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992343697] [2023-12-02 13:01:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:53,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:01:53,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:01:53,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478093991] [2023-12-02 13:01:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:53,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:01:53,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:01:53,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:01:53,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 13:01:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:54,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 13:01:54,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:01:54,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:59,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:59,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992343697] [2023-12-02 13:01:59,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:59,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478093991] [2023-12-02 13:01:59,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478093991] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:01:59,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570688595] [2023-12-02 13:01:59,590 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 13:01:59,590 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:59,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:59,591 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:59,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:02:02,541 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 13:02:02,596 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:02:02,598 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:02:22,104 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7734#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) 0) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693952) (exists ((|v_ULTIMATE.start_main_~b~0#1_89| Int)) (and (= |ULTIMATE.start_main_~b~0#1| (div |v_ULTIMATE.start_main_~b~0#1_89| 2)) (<= 0 (+ 9223372036854775808 (div |v_ULTIMATE.start_main_~b~0#1_89| 2))) (<= (div |v_ULTIMATE.start_main_~b~0#1_89| 2) 9223372036854775807) (= (mod |v_ULTIMATE.start_main_~b~0#1_89| 2) 0))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (mod (* 3 |ULTIMATE.start_main_~p~0#1|) 4) 0) (<= |ULTIMATE.start_main_~x~0#1| 100) (= |ULTIMATE.start_main_~q~0#1| 0) (exists ((|v_ULTIMATE.start_main_~a~0#1_87| Int)) (and (= |ULTIMATE.start_main_~a~0#1| (div |v_ULTIMATE.start_main_~a~0#1_87| 2)) (<= (div |v_ULTIMATE.start_main_~a~0#1_87| 2) 9223372036854775807) (<= 0 (+ 9223372036854775808 (div |v_ULTIMATE.start_main_~a~0#1_87| 2))) (= 0 (mod |v_ULTIMATE.start_main_~a~0#1_87| 2)))) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693951)) (<= |ULTIMATE.start_main_~y~0#1| 100))' at error location [2023-12-02 13:02:22,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:02:22,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:02:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 13:02:22,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974400448] [2023-12-02 13:02:22,105 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:02:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:02:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:02:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1191, Unknown=4, NotChecked=0, Total=1406 [2023-12-02 13:02:22,106 INFO L87 Difference]: Start difference. First operand 422 states and 610 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:02:22,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:22,912 INFO L93 Difference]: Finished difference Result 574 states and 815 transitions. [2023-12-02 13:02:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:02:22,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2023-12-02 13:02:22,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:22,915 INFO L225 Difference]: With dead ends: 574 [2023-12-02 13:02:22,915 INFO L226 Difference]: Without dead ends: 563 [2023-12-02 13:02:22,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=266, Invalid=1452, Unknown=4, NotChecked=0, Total=1722 [2023-12-02 13:02:22,917 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 214 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:22,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 121 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:02:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-12-02 13:02:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 486. [2023-12-02 13:02:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 432 states have (on average 1.5416666666666667) internal successors, (666), 460 states have internal predecessors, (666), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 13:02:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 710 transitions. [2023-12-02 13:02:22,964 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 710 transitions. Word has length 34 [2023-12-02 13:02:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:22,964 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 710 transitions. [2023-12-02 13:02:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:02:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 710 transitions. [2023-12-02 13:02:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 13:02:22,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:22,966 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:02:22,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 13:02:23,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:23,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:02:23,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1909911090, now seen corresponding path program 1 times [2023-12-02 13:02:23,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:23,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506734973] [2023-12-02 13:02:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:23,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177292729] [2023-12-02 13:02:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:23,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:23,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:23,177 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:23,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 13:02:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:23,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 13:02:23,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:02:23,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:02:26,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:02:26,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506734973] [2023-12-02 13:02:26,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:02:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177292729] [2023-12-02 13:02:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177292729] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:02:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1485709223] [2023-12-02 13:02:26,227 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 13:02:26,227 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:02:26,228 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:02:26,228 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:02:26,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:02:28,510 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 13:02:28,689 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:02:28,690 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:02:42,894 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9067#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 100) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 100))' at error location [2023-12-02 13:02:42,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:02:42,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:02:42,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 13:02:42,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86510940] [2023-12-02 13:02:42,894 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:02:42,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:02:42,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:02:42,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:02:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1129, Unknown=2, NotChecked=0, Total=1332 [2023-12-02 13:02:42,896 INFO L87 Difference]: Start difference. First operand 486 states and 710 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:02:44,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:44,334 INFO L93 Difference]: Finished difference Result 649 states and 918 transitions. [2023-12-02 13:02:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 13:02:44,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2023-12-02 13:02:44,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:44,339 INFO L225 Difference]: With dead ends: 649 [2023-12-02 13:02:44,339 INFO L226 Difference]: Without dead ends: 629 [2023-12-02 13:02:44,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=312, Invalid=1666, Unknown=2, NotChecked=0, Total=1980 [2023-12-02 13:02:44,341 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 388 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:44,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 72 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 13:02:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2023-12-02 13:02:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 469. [2023-12-02 13:02:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 420 states have (on average 1.4952380952380953) internal successors, (628), 444 states have internal predecessors, (628), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 13:02:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 670 transitions. [2023-12-02 13:02:44,384 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 670 transitions. Word has length 35 [2023-12-02 13:02:44,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:44,384 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 670 transitions. [2023-12-02 13:02:44,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:02:44,384 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 670 transitions. [2023-12-02 13:02:44,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 13:02:44,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:44,385 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:44,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 13:02:44,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 13:02:44,590 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:02:44,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash -922298302, now seen corresponding path program 1 times [2023-12-02 13:02:44,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330398459] [2023-12-02 13:02:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:44,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:44,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560430661] [2023-12-02 13:02:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:44,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:44,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:44,601 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:44,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:02:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:44,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 13:02:44,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:02:45,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:03:26,507 WARN L293 SmtUtils]: Spent 29.07s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:03:49,632 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 2))) (or (not (= (mod |c_ULTIMATE.start_main_~a~0#1| 2) 0)) (and (<= 1 .cse0) (<= 0 |c_ULTIMATE.start_main_~b~0#1|)) (let ((.cse3 (div |c_ULTIMATE.start_main_~a~0#1| 2)) (.cse1 (* |c_ULTIMATE.start_main_~p~0#1| 4)) (.cse8 (div |c_ULTIMATE.start_main_~b~0#1| 2))) (let ((.cse2 (+ .cse8 1)) (.cse6 (not (= .cse0 0))) (.cse4 (forall ((|v_ULTIMATE.start_main_~a~0#1_95| Int) (|v_ULTIMATE.start_main_~b~0#1_97| Int) (|v_ULTIMATE.start_main_~p~0#1_63| Int)) (or (= .cse3 |v_ULTIMATE.start_main_~a~0#1_95|) (< |v_ULTIMATE.start_main_~a~0#1_95| .cse3) (< |v_ULTIMATE.start_main_~b~0#1_97| .cse8) (< |v_ULTIMATE.start_main_~p~0#1_63| .cse1) (< 0 (+ (* |v_ULTIMATE.start_main_~b~0#1_97| |v_ULTIMATE.start_main_~a~0#1_95| |v_ULTIMATE.start_main_~p~0#1_63|) 9223372036854775809))))) (.cse5 (< |c_ULTIMATE.start_main_~b~0#1| 0)) (.cse7 (forall ((|v_ULTIMATE.start_main_~a~0#1_95| Int) (|v_ULTIMATE.start_main_~b~0#1_97| Int) (|v_ULTIMATE.start_main_~p~0#1_63| Int)) (or (< |v_ULTIMATE.start_main_~a~0#1_95| .cse3) (< |v_ULTIMATE.start_main_~b~0#1_97| .cse8) (< |v_ULTIMATE.start_main_~p~0#1_63| .cse1) (< 0 (+ (* |v_ULTIMATE.start_main_~b~0#1_97| |v_ULTIMATE.start_main_~a~0#1_95| |v_ULTIMATE.start_main_~p~0#1_63|) 9223372036854775809)))))) (and (forall ((|v_ULTIMATE.start_main_~a~0#1_95| Int)) (or (forall ((|v_ULTIMATE.start_main_~p~0#1_63| Int)) (or (< |v_ULTIMATE.start_main_~p~0#1_63| .cse1) (forall ((|v_ULTIMATE.start_main_~b~0#1_97| Int)) (or (< |v_ULTIMATE.start_main_~b~0#1_97| .cse2) (< 0 (+ (* |v_ULTIMATE.start_main_~b~0#1_97| |v_ULTIMATE.start_main_~a~0#1_95| |v_ULTIMATE.start_main_~p~0#1_63|) 9223372036854775809)))))) (< |v_ULTIMATE.start_main_~a~0#1_95| .cse3))) (or .cse4 .cse5) (or .cse6 .cse7) (forall ((|v_ULTIMATE.start_main_~a~0#1_95| Int)) (or (= .cse3 |v_ULTIMATE.start_main_~a~0#1_95|) (forall ((|v_ULTIMATE.start_main_~p~0#1_63| Int)) (or (< |v_ULTIMATE.start_main_~p~0#1_63| .cse1) (forall ((|v_ULTIMATE.start_main_~b~0#1_97| Int)) (or (< |v_ULTIMATE.start_main_~b~0#1_97| .cse2) (< 0 (+ (* |v_ULTIMATE.start_main_~b~0#1_97| |v_ULTIMATE.start_main_~a~0#1_95| |v_ULTIMATE.start_main_~p~0#1_63|) 9223372036854775809)))))) (< |v_ULTIMATE.start_main_~a~0#1_95| .cse3))) (or .cse6 .cse4) (or .cse5 .cse7)))))) is different from true [2023-12-02 13:03:55,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:03:55,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330398459] [2023-12-02 13:03:55,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:03:55,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560430661] [2023-12-02 13:03:55,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560430661] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:03:55,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [386080953] [2023-12-02 13:03:55,820 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 13:03:55,820 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:03:55,821 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:03:55,821 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:03:55,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:03:58,537 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 13:03:58,568 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:03:58,570 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:36,918 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10481#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693952) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (= (mod (* 3 |ULTIMATE.start_main_~p~0#1|) 4) 0) (<= |ULTIMATE.start_main_~x~0#1| 100) (= |ULTIMATE.start_main_~q~0#1| 0) (exists ((|v_ULTIMATE.start_main_~a~0#1_99| Int)) (and (= (div |v_ULTIMATE.start_main_~a~0#1_99| 2) |ULTIMATE.start_main_~a~0#1|) (<= (div |v_ULTIMATE.start_main_~a~0#1_99| 2) 9223372036854775807) (= (mod |v_ULTIMATE.start_main_~a~0#1_99| 2) 0))) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) 0) (exists ((|v_ULTIMATE.start_main_~b~0#1_101| Int)) (and (<= (div |v_ULTIMATE.start_main_~b~0#1_101| 2) 9223372036854775807) (= (div |v_ULTIMATE.start_main_~b~0#1_101| 2) |ULTIMATE.start_main_~b~0#1|) (= (mod |v_ULTIMATE.start_main_~b~0#1_101| 2) 0))) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 4) 2305843009213693951)) (<= |ULTIMATE.start_main_~y~0#1| 100) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 13:04:36,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:04:36,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:04:36,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 13:04:36,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308082396] [2023-12-02 13:04:36,918 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:04:36,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:04:36,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:36,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:04:36,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1257, Unknown=9, NotChecked=74, Total=1560 [2023-12-02 13:04:36,920 INFO L87 Difference]: Start difference. First operand 469 states and 670 transitions. Second operand has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:04:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:37,378 INFO L93 Difference]: Finished difference Result 510 states and 696 transitions. [2023-12-02 13:04:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:04:37,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2023-12-02 13:04:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:37,382 INFO L225 Difference]: With dead ends: 510 [2023-12-02 13:04:37,382 INFO L226 Difference]: Without dead ends: 506 [2023-12-02 13:04:37,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 72.2s TimeCoverageRelationStatistics Valid=329, Invalid=1736, Unknown=9, NotChecked=88, Total=2162 [2023-12-02 13:04:37,384 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 221 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:37,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 101 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:04:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-12-02 13:04:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 450. [2023-12-02 13:04:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 402 states have (on average 1.4651741293532339) internal successors, (589), 426 states have internal predecessors, (589), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:04:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 629 transitions. [2023-12-02 13:04:37,425 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 629 transitions. Word has length 36 [2023-12-02 13:04:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:37,425 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 629 transitions. [2023-12-02 13:04:37,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:04:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 629 transitions. [2023-12-02 13:04:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 13:04:37,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:37,426 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:37,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:04:37,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 13:04:37,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:04:37,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:37,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1542044970, now seen corresponding path program 1 times [2023-12-02 13:04:37,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:37,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16888937] [2023-12-02 13:04:37,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:37,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:37,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:04:37,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562497429] [2023-12-02 13:04:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:37,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:37,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 13:04:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:37,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 13:04:37,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:04:37,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:04:38,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16888937] [2023-12-02 13:04:38,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:04:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562497429] [2023-12-02 13:04:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562497429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:04:38,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1074284037] [2023-12-02 13:04:38,120 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 13:04:38,120 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:38,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:38,121 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:38,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:04:38,680 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 49 for LOIs [2023-12-02 13:04:38,689 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:04:38,690 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:04:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1074284037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:41,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:04:41,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 7] total 28 [2023-12-02 13:04:41,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334441829] [2023-12-02 13:04:41,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:41,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:04:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:04:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:04:41,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2023-12-02 13:04:41,062 INFO L87 Difference]: Start difference. First operand 450 states and 629 transitions. Second operand has 18 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:04:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:41,814 INFO L93 Difference]: Finished difference Result 454 states and 629 transitions. [2023-12-02 13:04:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 13:04:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2023-12-02 13:04:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:41,816 INFO L225 Difference]: With dead ends: 454 [2023-12-02 13:04:41,816 INFO L226 Difference]: Without dead ends: 450 [2023-12-02 13:04:41,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 69 SyntacticMatches, 13 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2023-12-02 13:04:41,817 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 275 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:41,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 129 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:04:41,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-12-02 13:04:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2023-12-02 13:04:41,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 402 states have (on average 1.455223880597015) internal successors, (585), 426 states have internal predecessors, (585), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:04:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 625 transitions. [2023-12-02 13:04:41,856 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 625 transitions. Word has length 37 [2023-12-02 13:04:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:41,856 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 625 transitions. [2023-12-02 13:04:41,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:04:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 625 transitions. [2023-12-02 13:04:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 13:04:41,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:41,857 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:04:41,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 13:04:42,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 13:04:42,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:04:42,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1473523764, now seen corresponding path program 1 times [2023-12-02 13:04:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:04:42,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429675638] [2023-12-02 13:04:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:42,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:04:42,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:04:42,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205088629] [2023-12-02 13:04:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:42,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:04:42,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:42,067 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:04:42,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 13:04:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:42,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 13:04:42,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:04:42,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:47,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:04:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429675638] [2023-12-02 13:04:47,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:04:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205088629] [2023-12-02 13:04:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205088629] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:04:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730669921] [2023-12-02 13:04:47,340 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 13:04:47,340 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:04:47,341 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:04:47,341 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:04:47,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:04:49,548 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2023-12-02 13:04:49,577 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:04:49,578 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:14,335 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12951#(and (exists ((|v_ULTIMATE.start_main_~b~0#1_111| Int)) (and (= (mod |v_ULTIMATE.start_main_~b~0#1_111| 2) 0) (= |ULTIMATE.start_main_~b~0#1| (div |v_ULTIMATE.start_main_~b~0#1_111| 2)) (<= (div |v_ULTIMATE.start_main_~b~0#1_111| 2) 9223372036854775807))) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (= (mod |ULTIMATE.start_main_~p~0#1| 4) 0) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 0 (+ (div |ULTIMATE.start_main_~p~0#1| 4) 2305843009213693952)) (exists ((|v_ULTIMATE.start_main_~a~0#1_109| Int)) (and (<= (div |v_ULTIMATE.start_main_~a~0#1_109| 2) 9223372036854775807) (= (div |v_ULTIMATE.start_main_~a~0#1_109| 2) |ULTIMATE.start_main_~a~0#1|) (= (mod |v_ULTIMATE.start_main_~a~0#1_109| 2) 0))) (<= |ULTIMATE.start_main_~y~0#1| 100) (<= (div |ULTIMATE.start_main_~p~0#1| 4) 2305843009213693951) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 13:05:14,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:05:14,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:05:14,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 13:05:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601588225] [2023-12-02 13:05:14,336 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:14,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:05:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:05:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1254, Unknown=11, NotChecked=0, Total=1482 [2023-12-02 13:05:14,338 INFO L87 Difference]: Start difference. First operand 450 states and 625 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:05:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:15,416 INFO L93 Difference]: Finished difference Result 637 states and 862 transitions. [2023-12-02 13:05:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:05:15,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2023-12-02 13:05:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:15,420 INFO L225 Difference]: With dead ends: 637 [2023-12-02 13:05:15,420 INFO L226 Difference]: Without dead ends: 630 [2023-12-02 13:05:15,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=291, Invalid=1678, Unknown=11, NotChecked=0, Total=1980 [2023-12-02 13:05:15,422 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 263 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:15,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 144 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 13:05:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-02 13:05:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 551. [2023-12-02 13:05:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 497 states have (on average 1.4265593561368208) internal successors, (709), 521 states have internal predecessors, (709), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:05:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 761 transitions. [2023-12-02 13:05:15,469 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 761 transitions. Word has length 37 [2023-12-02 13:05:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:15,470 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 761 transitions. [2023-12-02 13:05:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:05:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 761 transitions. [2023-12-02 13:05:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 13:05:15,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:15,471 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:05:15,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 13:05:15,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 13:05:15,671 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:05:15,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1565403516, now seen corresponding path program 1 times [2023-12-02 13:05:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750566386] [2023-12-02 13:05:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:15,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826821627] [2023-12-02 13:05:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:15,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:15,679 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:15,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 13:05:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:15,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:05:15,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:05:15,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:15,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750566386] [2023-12-02 13:05:15,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826821627] [2023-12-02 13:05:15,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826821627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:15,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:15,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:05:15,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350506942] [2023-12-02 13:05:15,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:15,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:05:15,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:15,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:05:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:05:15,760 INFO L87 Difference]: Start difference. First operand 551 states and 761 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:05:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:16,288 INFO L93 Difference]: Finished difference Result 589 states and 798 transitions. [2023-12-02 13:05:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:05:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-12-02 13:05:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:16,291 INFO L225 Difference]: With dead ends: 589 [2023-12-02 13:05:16,291 INFO L226 Difference]: Without dead ends: 588 [2023-12-02 13:05:16,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 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 13:05:16,292 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 46 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:16,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 140 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:05:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-02 13:05:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 551. [2023-12-02 13:05:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 497 states have (on average 1.4225352112676057) internal successors, (707), 521 states have internal predecessors, (707), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:05:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2023-12-02 13:05:16,325 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 38 [2023-12-02 13:05:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:16,325 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2023-12-02 13:05:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:05:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2023-12-02 13:05:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 13:05:16,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:16,327 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:16,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 13:05:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 13:05:16,527 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:05:16,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1873935934, now seen corresponding path program 1 times [2023-12-02 13:05:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428874962] [2023-12-02 13:05:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:16,534 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:16,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102961733] [2023-12-02 13:05:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:16,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:16,535 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:16,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 13:05:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:16,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:05:16,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:05:17,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:17,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428874962] [2023-12-02 13:05:17,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:17,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102961733] [2023-12-02 13:05:17,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102961733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:17,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:17,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:05:17,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196232204] [2023-12-02 13:05:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:17,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:05:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:17,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:05:17,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:05:17,337 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:05:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:18,478 INFO L93 Difference]: Finished difference Result 583 states and 794 transitions. [2023-12-02 13:05:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:05:18,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-12-02 13:05:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:18,481 INFO L225 Difference]: With dead ends: 583 [2023-12-02 13:05:18,481 INFO L226 Difference]: Without dead ends: 581 [2023-12-02 13:05:18,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:05:18,482 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 159 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:18,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 144 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 13:05:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-02 13:05:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 570. [2023-12-02 13:05:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 515 states have (on average 1.4155339805825242) internal successors, (729), 539 states have internal predecessors, (729), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 13:05:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 783 transitions. [2023-12-02 13:05:18,515 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 783 transitions. Word has length 39 [2023-12-02 13:05:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:18,515 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 783 transitions. [2023-12-02 13:05:18,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:05:18,516 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 783 transitions. [2023-12-02 13:05:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 13:05:18,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:18,516 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:05:18,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 13:05:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:18,717 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:05:18,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1282868682, now seen corresponding path program 1 times [2023-12-02 13:05:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:18,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838997863] [2023-12-02 13:05:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:18,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968353422] [2023-12-02 13:05:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:18,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:18,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:18,727 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:18,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 13:05:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:18,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:05:18,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:05:18,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:18,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838997863] [2023-12-02 13:05:18,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968353422] [2023-12-02 13:05:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968353422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:18,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:18,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:05:18,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733421343] [2023-12-02 13:05:18,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:18,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:05:18,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:05:18,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:05:18,804 INFO L87 Difference]: Start difference. First operand 570 states and 783 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:05:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:19,226 INFO L93 Difference]: Finished difference Result 607 states and 820 transitions. [2023-12-02 13:05:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:05:19,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-12-02 13:05:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:19,230 INFO L225 Difference]: With dead ends: 607 [2023-12-02 13:05:19,230 INFO L226 Difference]: Without dead ends: 606 [2023-12-02 13:05:19,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 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 13:05:19,231 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 53 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:19,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 125 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:05:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-02 13:05:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 570. [2023-12-02 13:05:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 515 states have (on average 1.4116504854368932) internal successors, (727), 539 states have internal predecessors, (727), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 13:05:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 781 transitions. [2023-12-02 13:05:19,261 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 781 transitions. Word has length 39 [2023-12-02 13:05:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:19,262 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 781 transitions. [2023-12-02 13:05:19,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:05:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 781 transitions. [2023-12-02 13:05:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 13:05:19,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:19,262 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:19,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 13:05:19,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 13:05:19,463 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:05:19,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -973030123, now seen corresponding path program 1 times [2023-12-02 13:05:19,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059408118] [2023-12-02 13:05:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:19,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498502206] [2023-12-02 13:05:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:19,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:19,470 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:19,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 13:05:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:19,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:05:19,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:05:20,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:23,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:23,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059408118] [2023-12-02 13:05:23,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:23,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498502206] [2023-12-02 13:05:23,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498502206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:05:23,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1780274251] [2023-12-02 13:05:23,175 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:05:23,175 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:23,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:23,176 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:23,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:25,151 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2023-12-02 13:05:25,159 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:05:25,160 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:28,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1780274251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:28,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:05:28,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 23 [2023-12-02 13:05:28,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243301069] [2023-12-02 13:05:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:28,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:05:28,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:05:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=563, Unknown=1, NotChecked=0, Total=756 [2023-12-02 13:05:28,955 INFO L87 Difference]: Start difference. First operand 570 states and 781 transitions. Second operand has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:05:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:30,790 INFO L93 Difference]: Finished difference Result 592 states and 799 transitions. [2023-12-02 13:05:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 13:05:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2023-12-02 13:05:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:30,793 INFO L225 Difference]: With dead ends: 592 [2023-12-02 13:05:30,793 INFO L226 Difference]: Without dead ends: 586 [2023-12-02 13:05:30,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 57 SyntacticMatches, 13 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=233, Invalid=636, Unknown=1, NotChecked=0, Total=870 [2023-12-02 13:05:30,794 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 231 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:30,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 119 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 13:05:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-12-02 13:05:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 570. [2023-12-02 13:05:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 515 states have (on average 1.4038834951456312) internal successors, (723), 539 states have internal predecessors, (723), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 13:05:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 777 transitions. [2023-12-02 13:05:30,834 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 777 transitions. Word has length 40 [2023-12-02 13:05:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:30,834 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 777 transitions. [2023-12-02 13:05:30,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:05:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 777 transitions. [2023-12-02 13:05:30,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 13:05:30,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:30,835 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:05:30,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 13:05:31,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:31,036 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:05:31,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2037528132, now seen corresponding path program 1 times [2023-12-02 13:05:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:31,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57313175] [2023-12-02 13:05:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:31,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033927340] [2023-12-02 13:05:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:31,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:31,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:31,042 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:31,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 13:05:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:31,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 13:05:31,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:05:31,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:32,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:32,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57313175] [2023-12-02 13:05:32,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:32,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033927340] [2023-12-02 13:05:32,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033927340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:05:32,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [532397024] [2023-12-02 13:05:32,558 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-12-02 13:05:32,558 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:32,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:32,559 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:32,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:34,557 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2023-12-02 13:05:34,565 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:05:34,567 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:37,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [532397024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:37,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:05:37,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9] total 24 [2023-12-02 13:05:37,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196049293] [2023-12-02 13:05:37,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:37,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 13:05:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 13:05:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2023-12-02 13:05:37,555 INFO L87 Difference]: Start difference. First operand 570 states and 777 transitions. Second operand has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:05:38,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:38,491 INFO L93 Difference]: Finished difference Result 583 states and 788 transitions. [2023-12-02 13:05:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 13:05:38,492 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2023-12-02 13:05:38,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:38,495 INFO L225 Difference]: With dead ends: 583 [2023-12-02 13:05:38,495 INFO L226 Difference]: Without dead ends: 581 [2023-12-02 13:05:38,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2023-12-02 13:05:38,496 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 131 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:38,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 136 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:05:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-02 13:05:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 564. [2023-12-02 13:05:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 509 states have (on average 1.4047151277013752) internal successors, (715), 533 states have internal predecessors, (715), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 13:05:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 769 transitions. [2023-12-02 13:05:38,543 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 769 transitions. Word has length 40 [2023-12-02 13:05:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:38,543 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 769 transitions. [2023-12-02 13:05:38,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:05:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 769 transitions. [2023-12-02 13:05:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 13:05:38,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:38,544 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:05:38,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 13:05:38,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:38,745 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:05:38,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2126977275, now seen corresponding path program 1 times [2023-12-02 13:05:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:38,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785644334] [2023-12-02 13:05:38,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:38,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:38,752 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:38,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740972261] [2023-12-02 13:05:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:38,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:38,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:38,754 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:38,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 13:05:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:38,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:05:38,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:05:38,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:05:39,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:39,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785644334] [2023-12-02 13:05:39,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:39,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740972261] [2023-12-02 13:05:39,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740972261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:39,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1126344886] [2023-12-02 13:05:39,341 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 13:05:39,341 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:39,341 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:39,341 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:39,342 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:40,827 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2023-12-02 13:05:40,857 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:05:40,858 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:45,321 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21657#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) 0) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~b~0#1| 99) (<= |ULTIMATE.start_main_~y~0#1| 100) (<= |ULTIMATE.start_main_~a~0#1| 99))' at error location [2023-12-02 13:05:45,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:05:45,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:05:45,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-12-02 13:05:45,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302223403] [2023-12-02 13:05:45,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:45,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 13:05:45,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 13:05:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 13:05:45,324 INFO L87 Difference]: Start difference. First operand 564 states and 769 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 13:05:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:46,035 INFO L93 Difference]: Finished difference Result 620 states and 849 transitions. [2023-12-02 13:05:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:05:46,036 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 42 [2023-12-02 13:05:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:46,038 INFO L225 Difference]: With dead ends: 620 [2023-12-02 13:05:46,038 INFO L226 Difference]: Without dead ends: 601 [2023-12-02 13:05:46,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 78 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=275, Invalid=1447, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 13:05:46,040 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 252 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:46,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 92 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:05:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-12-02 13:05:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 371. [2023-12-02 13:05:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 333 states have (on average 1.3003003003003002) internal successors, (433), 350 states have internal predecessors, (433), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 13:05:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 467 transitions. [2023-12-02 13:05:46,077 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 467 transitions. Word has length 42 [2023-12-02 13:05:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:46,078 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 467 transitions. [2023-12-02 13:05:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 13:05:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 467 transitions. [2023-12-02 13:05:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 13:05:46,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:46,079 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:05:46,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-02 13:05:46,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 13:05:46,279 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:05:46,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash 379273223, now seen corresponding path program 1 times [2023-12-02 13:05:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:05:46,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75276017] [2023-12-02 13:05:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:05:46,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:05:46,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660413703] [2023-12-02 13:05:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:46,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:46,288 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:46,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 13:05:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:46,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:05:46,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:05:46,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:47,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75276017] [2023-12-02 13:05:47,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660413703] [2023-12-02 13:05:47,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660413703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:05:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497868344] [2023-12-02 13:05:47,271 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 13:05:47,271 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:47,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:47,271 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:47,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:48,849 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2023-12-02 13:05:48,879 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:05:48,880 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:05:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [497868344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:53,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:05:53,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [7] total 31 [2023-12-02 13:05:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649983976] [2023-12-02 13:05:53,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:53,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 13:05:53,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:05:53,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 13:05:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 13:05:53,242 INFO L87 Difference]: Start difference. First operand 371 states and 467 transitions. Second operand has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:06:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:04,376 INFO L93 Difference]: Finished difference Result 506 states and 617 transitions. [2023-12-02 13:06:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 13:06:04,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-12-02 13:06:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:04,379 INFO L225 Difference]: With dead ends: 506 [2023-12-02 13:06:04,379 INFO L226 Difference]: Without dead ends: 504 [2023-12-02 13:06:04,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 64 SyntacticMatches, 10 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1078, Invalid=4178, Unknown=0, NotChecked=0, Total=5256 [2023-12-02 13:06:04,381 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 343 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:04,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 83 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-02 13:06:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-02 13:06:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 427. [2023-12-02 13:06:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 387 states have (on average 1.3049095607235142) internal successors, (505), 404 states have internal predecessors, (505), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:06:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 543 transitions. [2023-12-02 13:06:04,409 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 543 transitions. Word has length 44 [2023-12-02 13:06:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:04,409 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 543 transitions. [2023-12-02 13:06:04,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:06:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 543 transitions. [2023-12-02 13:06:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 13:06:04,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:04,410 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:06:04,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 13:06:04,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 13:06:04,611 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:06:04,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash -590651127, now seen corresponding path program 1 times [2023-12-02 13:06:04,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:04,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604144139] [2023-12-02 13:06:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:04,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:04,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810965397] [2023-12-02 13:06:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:04,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:04,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:04,619 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:04,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 13:06:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:04,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 13:06:04,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:06:05,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:07,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:07,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604144139] [2023-12-02 13:06:07,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:07,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810965397] [2023-12-02 13:06:07,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810965397] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:06:07,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1597906557] [2023-12-02 13:06:07,178 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 13:06:07,178 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:07,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:07,178 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:07,179 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:06:08,468 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2023-12-02 13:06:08,501 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:06:08,502 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:14,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24311#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ 9223372036854775809 |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) 0) (<= |ULTIMATE.start_main_~a~0#1| 100) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 9223372036854775907)) (<= |ULTIMATE.start_main_~b~0#1| 100) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 9223372036854775907)) (<= |ULTIMATE.start_main_~y~0#1| 100))' at error location [2023-12-02 13:06:14,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:06:14,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:06:14,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 13:06:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523744035] [2023-12-02 13:06:14,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:06:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:06:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:06:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1349, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 13:06:14,336 INFO L87 Difference]: Start difference. First operand 427 states and 543 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:06:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:16,005 INFO L93 Difference]: Finished difference Result 509 states and 646 transitions. [2023-12-02 13:06:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:06:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2023-12-02 13:06:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:16,007 INFO L225 Difference]: With dead ends: 509 [2023-12-02 13:06:16,007 INFO L226 Difference]: Without dead ends: 500 [2023-12-02 13:06:16,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=298, Invalid=1772, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 13:06:16,009 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 154 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:16,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 48 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 13:06:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-02 13:06:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 272. [2023-12-02 13:06:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 247 states have (on average 1.1862348178137652) internal successors, (293), 255 states have internal predecessors, (293), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 13:06:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 319 transitions. [2023-12-02 13:06:16,030 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 319 transitions. Word has length 46 [2023-12-02 13:06:16,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:16,030 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 319 transitions. [2023-12-02 13:06:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:06:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 319 transitions. [2023-12-02 13:06:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 13:06:16,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:16,031 INFO L195 NwaCegarLoop]: trace histogram [3, 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 13:06:16,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 13:06:16,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 13:06:16,231 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:06:16,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:16,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1130315695, now seen corresponding path program 1 times [2023-12-02 13:06:16,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:16,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851613149] [2023-12-02 13:06:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:16,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:16,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:16,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190154604] [2023-12-02 13:06:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:16,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:16,239 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:16,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 13:06:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:16,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 13:06:16,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:06:16,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:17,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:17,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851613149] [2023-12-02 13:06:17,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:17,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190154604] [2023-12-02 13:06:17,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190154604] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:06:17,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [152463608] [2023-12-02 13:06:17,071 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 13:06:17,071 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:17,072 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:17,072 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:17,072 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:06:18,312 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:06:18,318 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:06:18,320 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:28,590 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25470#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 100) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~b~0#1| 100) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 100))' at error location [2023-12-02 13:06:28,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:06:28,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:06:28,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 13:06:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759772240] [2023-12-02 13:06:28,590 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:06:28,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:06:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:06:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 13:06:28,592 INFO L87 Difference]: Start difference. First operand 272 states and 319 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:06:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:29,520 INFO L93 Difference]: Finished difference Result 303 states and 354 transitions. [2023-12-02 13:06:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:06:29,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2023-12-02 13:06:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:29,522 INFO L225 Difference]: With dead ends: 303 [2023-12-02 13:06:29,522 INFO L226 Difference]: Without dead ends: 302 [2023-12-02 13:06:29,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=351, Invalid=1719, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 13:06:29,523 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:29,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 85 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:06:29,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-02 13:06:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 279. [2023-12-02 13:06:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 254 states have (on average 1.1811023622047243) internal successors, (300), 262 states have internal predecessors, (300), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 13:06:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 326 transitions. [2023-12-02 13:06:29,546 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 326 transitions. Word has length 47 [2023-12-02 13:06:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:29,546 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 326 transitions. [2023-12-02 13:06:29,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:06:29,547 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 326 transitions. [2023-12-02 13:06:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 13:06:29,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:29,547 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:06:29,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 13:06:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 13:06:29,748 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:06:29,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:29,748 INFO L85 PathProgramCache]: Analyzing trace with hash -324415917, now seen corresponding path program 1 times [2023-12-02 13:06:29,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:29,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923616765] [2023-12-02 13:06:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:29,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:29,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493959964] [2023-12-02 13:06:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:29,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:29,756 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:29,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 13:06:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:29,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:06:29,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:06:30,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:06:30,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:30,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923616765] [2023-12-02 13:06:30,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:30,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493959964] [2023-12-02 13:06:30,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493959964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:30,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:06:30,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 13:06:30,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160742550] [2023-12-02 13:06:30,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:30,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:06:30,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:30,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:06:30,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:06:30,542 INFO L87 Difference]: Start difference. First operand 279 states and 326 transitions. Second operand has 10 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 13:06:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:33,270 INFO L93 Difference]: Finished difference Result 454 states and 525 transitions. [2023-12-02 13:06:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 13:06:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2023-12-02 13:06:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:33,273 INFO L225 Difference]: With dead ends: 454 [2023-12-02 13:06:33,273 INFO L226 Difference]: Without dead ends: 452 [2023-12-02 13:06:33,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2023-12-02 13:06:33,273 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 242 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:33,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 160 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 13:06:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-12-02 13:06:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 399. [2023-12-02 13:06:33,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 369 states have (on average 1.1815718157181572) internal successors, (436), 377 states have internal predecessors, (436), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:06:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 472 transitions. [2023-12-02 13:06:33,307 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 472 transitions. Word has length 51 [2023-12-02 13:06:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:33,307 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 472 transitions. [2023-12-02 13:06:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 13:06:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 472 transitions. [2023-12-02 13:06:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 13:06:33,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:33,308 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:06:33,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 13:06:33,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:33,508 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:06:33,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1450860223, now seen corresponding path program 1 times [2023-12-02 13:06:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:06:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564300454] [2023-12-02 13:06:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:06:33,515 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:06:33,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4353878] [2023-12-02 13:06:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:33,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:33,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:33,516 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:33,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 13:06:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:33,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:06:33,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:06:33,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:06:33,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:06:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564300454] [2023-12-02 13:06:33,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:06:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4353878] [2023-12-02 13:06:33,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4353878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:06:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1696832514] [2023-12-02 13:06:33,675 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 13:06:33,675 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:06:33,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:06:33,676 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:06:33,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:06:35,219 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-12-02 13:06:35,225 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:06:35,226 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:50,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1696832514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:50,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:06:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [3, 3] total 26 [2023-12-02 13:06:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571057084] [2023-12-02 13:06:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:50,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 13:06:50,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:50,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 13:06:50,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=559, Unknown=3, NotChecked=0, Total=702 [2023-12-02 13:06:50,187 INFO L87 Difference]: Start difference. First operand 399 states and 472 transitions. Second operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:07:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:00,295 INFO L93 Difference]: Finished difference Result 443 states and 517 transitions. [2023-12-02 13:07:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 13:07:00,295 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2023-12-02 13:07:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:00,298 INFO L225 Difference]: With dead ends: 443 [2023-12-02 13:07:00,298 INFO L226 Difference]: Without dead ends: 441 [2023-12-02 13:07:00,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 120 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=292, Invalid=965, Unknown=3, NotChecked=0, Total=1260 [2023-12-02 13:07:00,299 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 350 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:00,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 116 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-02 13:07:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-02 13:07:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 399. [2023-12-02 13:07:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 369 states have (on average 1.1761517615176151) internal successors, (434), 377 states have internal predecessors, (434), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:07:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 470 transitions. [2023-12-02 13:07:00,342 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 470 transitions. Word has length 52 [2023-12-02 13:07:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:00,342 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 470 transitions. [2023-12-02 13:07:00,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:07:00,342 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 470 transitions. [2023-12-02 13:07:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 13:07:00,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:00,343 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:07:00,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 13:07:00,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:00,544 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:07:00,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1497123886, now seen corresponding path program 1 times [2023-12-02 13:07:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777812805] [2023-12-02 13:07:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:00,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:07:00,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954880286] [2023-12-02 13:07:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:00,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:00,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:00,554 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:00,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 13:07:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:00,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:07:00,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 13:07:00,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:07:00,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:00,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777812805] [2023-12-02 13:07:00,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:07:00,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954880286] [2023-12-02 13:07:00,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954880286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:07:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:07:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740079499] [2023-12-02 13:07:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:00,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:07:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:07:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:07:00,691 INFO L87 Difference]: Start difference. First operand 399 states and 470 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:07:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:07:01,112 INFO L93 Difference]: Finished difference Result 441 states and 515 transitions. [2023-12-02 13:07:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:07:01,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2023-12-02 13:07:01,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:07:01,114 INFO L225 Difference]: With dead ends: 441 [2023-12-02 13:07:01,114 INFO L226 Difference]: Without dead ends: 440 [2023-12-02 13:07:01,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 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 13:07:01,115 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:07:01,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 118 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:07:01,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-02 13:07:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 413. [2023-12-02 13:07:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 383 states have (on average 1.1775456919060052) internal successors, (451), 391 states have internal predecessors, (451), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:07:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 487 transitions. [2023-12-02 13:07:01,150 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 487 transitions. Word has length 54 [2023-12-02 13:07:01,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:07:01,150 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 487 transitions. [2023-12-02 13:07:01,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 13:07:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 487 transitions. [2023-12-02 13:07:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 13:07:01,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:07:01,151 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:07:01,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-02 13:07:01,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 13:07:01,351 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:07:01,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:07:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1152067612, now seen corresponding path program 1 times [2023-12-02 13:07:01,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:07:01,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425157477] [2023-12-02 13:07:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:01,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:07:01,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:07:01,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113268139] [2023-12-02 13:07:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:07:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:07:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:07:01,359 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:07:01,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 13:07:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:07:01,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 13:07:01,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:07:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:07:01,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:07:02,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:07:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425157477] [2023-12-02 13:07:02,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:07:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113268139] [2023-12-02 13:07:02,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113268139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:07:02,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152493357] [2023-12-02 13:07:02,129 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 13:07:02,129 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:07:02,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:07:02,129 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:07:02,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:07:03,815 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-12-02 13:07:03,821 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:07:03,823 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:07:38,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1152493357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:07:38,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:07:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [12] total 42 [2023-12-02 13:07:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128613645] [2023-12-02 13:07:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:07:38,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 13:07:38,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:07:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 13:07:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1817, Unknown=3, NotChecked=0, Total=2162 [2023-12-02 13:07:38,747 INFO L87 Difference]: Start difference. First operand 413 states and 487 transitions. Second operand has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:08:02,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:08:18,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:08:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:23,412 INFO L93 Difference]: Finished difference Result 440 states and 513 transitions. [2023-12-02 13:08:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 13:08:23,413 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2023-12-02 13:08:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:23,415 INFO L225 Difference]: With dead ends: 440 [2023-12-02 13:08:23,415 INFO L226 Difference]: Without dead ends: 438 [2023-12-02 13:08:23,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 75 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=661, Invalid=3118, Unknown=3, NotChecked=0, Total=3782 [2023-12-02 13:08:23,416 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 258 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:23,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 98 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1007 Invalid, 2 Unknown, 0 Unchecked, 25.8s Time] [2023-12-02 13:08:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-02 13:08:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 425. [2023-12-02 13:08:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 395 states have (on average 1.1721518987341772) internal successors, (463), 403 states have internal predecessors, (463), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:08:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 499 transitions. [2023-12-02 13:08:23,451 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 499 transitions. Word has length 58 [2023-12-02 13:08:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:23,452 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 499 transitions. [2023-12-02 13:08:23,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:08:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 499 transitions. [2023-12-02 13:08:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 13:08:23,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:23,453 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 13:08:23,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 13:08:23,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 13:08:23,653 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:08:23,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:23,654 INFO L85 PathProgramCache]: Analyzing trace with hash -906509351, now seen corresponding path program 1 times [2023-12-02 13:08:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404500497] [2023-12-02 13:08:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:23,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385708905] [2023-12-02 13:08:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:23,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:23,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:23,664 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:23,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 13:08:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:23,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 13:08:23,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:08:24,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:08:56,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404500497] [2023-12-02 13:08:56,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385708905] [2023-12-02 13:08:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385708905] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [422610260] [2023-12-02 13:08:56,169 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 13:08:56,169 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:08:56,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:08:56,170 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:08:56,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:08:57,874 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 13:08:57,882 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:08:57,884 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:09:21,074 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31229#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 100) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 13:09:21,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:09:21,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:09:21,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2023-12-02 13:09:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309760044] [2023-12-02 13:09:21,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:09:21,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 13:09:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 13:09:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2328, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 13:09:21,076 INFO L87 Difference]: Start difference. First operand 425 states and 499 transitions. Second operand has 22 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 13:09:30,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:09:44,424 WARN L293 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 88 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:10:15,438 WARN L293 SmtUtils]: Spent 15.41s on a formula simplification. DAG size of input: 102 DAG size of output: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:10:19,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:10:33,175 WARN L293 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 84 DAG size of output: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:10:36,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:10:39,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:10:40,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:10:42,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:10:52,854 WARN L293 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 75 DAG size of output: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:11:08,189 WARN L293 SmtUtils]: Spent 10.42s on a formula simplification. DAG size of input: 101 DAG size of output: 71 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:11:10,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:11:13,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:11:15,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:11:18,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:11:20,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:11:23,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:11:23,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:11:23,744 INFO L93 Difference]: Finished difference Result 879 states and 1038 transitions. [2023-12-02 13:11:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-02 13:11:23,746 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 60 [2023-12-02 13:11:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:11:23,749 INFO L225 Difference]: With dead ends: 879 [2023-12-02 13:11:23,749 INFO L226 Difference]: Without dead ends: 593 [2023-12-02 13:11:23,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2590 ImplicationChecksByTransitivity, 112.6s TimeCoverageRelationStatistics Valid=853, Invalid=5949, Unknown=4, NotChecked=0, Total=6806 [2023-12-02 13:11:23,752 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 458 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 104 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:11:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 162 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1574 Invalid, 7 Unknown, 0 Unchecked, 39.7s Time] [2023-12-02 13:11:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-02 13:11:23,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 441. [2023-12-02 13:11:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 411 states have (on average 1.1630170316301702) internal successors, (478), 419 states have internal predecessors, (478), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:11:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 514 transitions. [2023-12-02 13:11:23,820 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 514 transitions. Word has length 60 [2023-12-02 13:11:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:11:23,821 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 514 transitions. [2023-12-02 13:11:23,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 13:11:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 514 transitions. [2023-12-02 13:11:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 13:11:23,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:23,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 13:11:23,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 13:11:24,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 13:11:24,023 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:11:24,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:24,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1164577729, now seen corresponding path program 2 times [2023-12-02 13:11:24,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:11:24,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801923831] [2023-12-02 13:11:24,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:24,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:11:24,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:11:24,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554899861] [2023-12-02 13:11:24,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:11:24,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:24,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:11:24,033 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:11:24,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 13:11:24,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 13:11:24,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:11:24,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:11:24,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 13:11:24,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:11:24,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:11:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801923831] [2023-12-02 13:11:24,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:11:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554899861] [2023-12-02 13:11:24,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554899861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:11:24,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:11:24,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:11:24,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631072184] [2023-12-02 13:11:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:11:24,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:11:24,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:11:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:11:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:11:24,171 INFO L87 Difference]: Start difference. First operand 441 states and 514 transitions. Second operand has 5 states, 3 states have (on average 14.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:11:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:11:24,692 INFO L93 Difference]: Finished difference Result 443 states and 514 transitions. [2023-12-02 13:11:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:11:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2023-12-02 13:11:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:11:24,695 INFO L225 Difference]: With dead ends: 443 [2023-12-02 13:11:24,695 INFO L226 Difference]: Without dead ends: 442 [2023-12-02 13:11:24,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:11:24,696 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:11:24,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 104 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:11:24,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-12-02 13:11:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 441. [2023-12-02 13:11:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 411 states have (on average 1.1532846715328466) internal successors, (474), 419 states have internal predecessors, (474), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 13:11:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 510 transitions. [2023-12-02 13:11:24,758 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 510 transitions. Word has length 60 [2023-12-02 13:11:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:11:24,758 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 510 transitions. [2023-12-02 13:11:24,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 13:11:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 510 transitions. [2023-12-02 13:11:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 13:11:24,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:24,759 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:11:24,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 13:11:24,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:24,960 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:11:24,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1821969584, now seen corresponding path program 1 times [2023-12-02 13:11:24,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:11:24,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345528531] [2023-12-02 13:11:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:24,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:11:24,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:11:24,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945822183] [2023-12-02 13:11:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:24,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:24,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:11:24,971 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:11:24,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 13:11:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:25,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:11:25,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:11:25,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:11:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:11:25,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:11:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345528531] [2023-12-02 13:11:25,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:11:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945822183] [2023-12-02 13:11:25,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945822183] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:11:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1436246906] [2023-12-02 13:11:25,753 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 13:11:25,753 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:11:25,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:11:25,754 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:11:25,754 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:11:27,554 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:11:27,561 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:11:27,562 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:11:44,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34279#(and (<= 1 |#StackHeapBarrier|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~b~0#1|)) (= (mod (+ |ULTIMATE.start_main_~a~0#1| 1) 2) 1) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 100) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= |ULTIMATE.start_main_~a~0#1| 99) (<= 0 (+ |ULTIMATE.start_main_~a~0#1| 1)))' at error location [2023-12-02 13:11:44,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:11:44,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:11:44,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2023-12-02 13:11:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591209779] [2023-12-02 13:11:44,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:11:44,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 13:11:44,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:11:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 13:11:44,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1637, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 13:11:44,272 INFO L87 Difference]: Start difference. First operand 441 states and 510 transitions. Second operand has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 13:11:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:11:47,882 INFO L93 Difference]: Finished difference Result 1119 states and 1301 transitions. [2023-12-02 13:11:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 13:11:47,883 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2023-12-02 13:11:47,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:11:47,886 INFO L225 Difference]: With dead ends: 1119 [2023-12-02 13:11:47,887 INFO L226 Difference]: Without dead ends: 828 [2023-12-02 13:11:47,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 127 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=652, Invalid=4178, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 13:11:47,889 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 633 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:11:47,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 206 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 13:11:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-02 13:11:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 696. [2023-12-02 13:11:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 655 states have (on average 1.1709923664122137) internal successors, (767), 663 states have internal predecessors, (767), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 13:11:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 825 transitions. [2023-12-02 13:11:47,968 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 825 transitions. Word has length 61 [2023-12-02 13:11:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:11:47,969 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 825 transitions. [2023-12-02 13:11:47,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 13 states have internal predecessors, (87), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2023-12-02 13:11:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 825 transitions. [2023-12-02 13:11:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 13:11:47,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:47,970 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:11:47,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 13:11:48,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:48,170 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:11:48,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1192496034, now seen corresponding path program 1 times [2023-12-02 13:11:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:11:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139241640] [2023-12-02 13:11:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:11:48,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:11:48,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126067592] [2023-12-02 13:11:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:48,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:48,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:11:48,181 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:11:48,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 13:11:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:48,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 13:11:48,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:11:49,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:11:58,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:11:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139241640] [2023-12-02 13:11:58,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:11:58,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126067592] [2023-12-02 13:11:58,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126067592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:11:58,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [30138929] [2023-12-02 13:11:58,189 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 13:11:58,189 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:11:58,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:11:58,189 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:11:58,190 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:11:59,827 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 13:11:59,835 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:11:59,836 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:12:20,031 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36694#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 100) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 13:12:20,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:12:20,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:12:20,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 13:12:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887862847] [2023-12-02 13:12:20,032 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:12:20,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 13:12:20,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:12:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 13:12:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2177, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 13:12:20,033 INFO L87 Difference]: Start difference. First operand 696 states and 825 transitions. Second operand has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:12:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:21,430 INFO L93 Difference]: Finished difference Result 727 states and 859 transitions. [2023-12-02 13:12:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 13:12:21,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 61 [2023-12-02 13:12:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:12:21,434 INFO L225 Difference]: With dead ends: 727 [2023-12-02 13:12:21,434 INFO L226 Difference]: Without dead ends: 726 [2023-12-02 13:12:21,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=486, Invalid=2936, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 13:12:21,436 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 254 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:12:21,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 150 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 13:12:21,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-02 13:12:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 703. [2023-12-02 13:12:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 662 states have (on average 1.1691842900302114) internal successors, (774), 670 states have internal predecessors, (774), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 13:12:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 832 transitions. [2023-12-02 13:12:21,537 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 832 transitions. Word has length 61 [2023-12-02 13:12:21,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:12:21,537 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 832 transitions. [2023-12-02 13:12:21,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:12:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 832 transitions. [2023-12-02 13:12:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 13:12:21,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:12:21,538 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:12:21,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 13:12:21,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:21,739 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:12:21,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:12:21,739 INFO L85 PathProgramCache]: Analyzing trace with hash 147428439, now seen corresponding path program 1 times [2023-12-02 13:12:21,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:12:21,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897405055] [2023-12-02 13:12:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:21,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:12:21,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:12:21,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954535339] [2023-12-02 13:12:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:21,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:21,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:12:21,748 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:12:21,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 13:12:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:12:21,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:12:21,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:12:21,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:12:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:12:22,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:12:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897405055] [2023-12-02 13:12:22,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:12:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954535339] [2023-12-02 13:12:22,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954535339] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:12:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2011465344] [2023-12-02 13:12:22,402 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 13:12:22,402 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:12:22,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:12:22,403 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:12:22,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:12:24,023 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:12:24,030 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:12:24,032 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:12:39,540 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38676#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~a~0#1|)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 100) (= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (mod (+ |ULTIMATE.start_main_~b~0#1| 1) 2) 1) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= |ULTIMATE.start_main_~b~0#1| 99) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 100))' at error location [2023-12-02 13:12:39,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:12:39,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:12:39,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-12-02 13:12:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627976791] [2023-12-02 13:12:39,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:12:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:12:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:12:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:12:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 13:12:39,543 INFO L87 Difference]: Start difference. First operand 703 states and 832 transitions. Second operand has 14 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-02 13:12:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:41,469 INFO L93 Difference]: Finished difference Result 1267 states and 1494 transitions. [2023-12-02 13:12:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 13:12:41,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 62 [2023-12-02 13:12:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:12:41,473 INFO L225 Difference]: With dead ends: 1267 [2023-12-02 13:12:41,473 INFO L226 Difference]: Without dead ends: 781 [2023-12-02 13:12:41,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 131 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=394, Invalid=2576, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 13:12:41,475 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 353 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:12:41,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 111 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 13:12:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2023-12-02 13:12:41,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 693. [2023-12-02 13:12:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 653 states have (on average 1.1546707503828484) internal successors, (754), 661 states have internal predecessors, (754), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 13:12:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 810 transitions. [2023-12-02 13:12:41,582 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 810 transitions. Word has length 62 [2023-12-02 13:12:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:12:41,583 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 810 transitions. [2023-12-02 13:12:41,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 7 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2023-12-02 13:12:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 810 transitions. [2023-12-02 13:12:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 13:12:41,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:12:41,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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 13:12:41,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 13:12:41,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:41,784 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:12:41,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:12:41,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1490661484, now seen corresponding path program 1 times [2023-12-02 13:12:41,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:12:41,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947541851] [2023-12-02 13:12:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:41,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:12:41,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:12:41,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747356531] [2023-12-02 13:12:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:41,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:12:41,794 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:12:41,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 13:12:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:12:41,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-02 13:12:41,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:12:42,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:12:46,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:12:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947541851] [2023-12-02 13:12:46,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:12:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747356531] [2023-12-02 13:12:46,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747356531] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:12:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2044199415] [2023-12-02 13:12:46,599 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 13:12:46,599 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:12:46,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:12:46,599 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:12:46,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:12:48,314 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 13:12:48,322 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:12:48,323 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:13:31,460 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '41142#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 100) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))))' at error location [2023-12-02 13:13:31,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:13:31,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:13:31,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-02 13:13:31,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145507580] [2023-12-02 13:13:31,460 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:13:31,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 13:13:31,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:13:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 13:13:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=2788, Unknown=3, NotChecked=0, Total=3192 [2023-12-02 13:13:31,462 INFO L87 Difference]: Start difference. First operand 693 states and 810 transitions. Second operand has 16 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:13:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:33,417 INFO L93 Difference]: Finished difference Result 741 states and 860 transitions. [2023-12-02 13:13:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 13:13:33,418 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 65 [2023-12-02 13:13:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:33,420 INFO L225 Difference]: With dead ends: 741 [2023-12-02 13:13:33,420 INFO L226 Difference]: Without dead ends: 739 [2023-12-02 13:13:33,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1708 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=556, Invalid=3997, Unknown=3, NotChecked=0, Total=4556 [2023-12-02 13:13:33,421 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 153 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:33,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 152 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 13:13:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2023-12-02 13:13:33,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 710. [2023-12-02 13:13:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 670 states have (on average 1.1522388059701492) internal successors, (772), 678 states have internal predecessors, (772), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 13:13:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 828 transitions. [2023-12-02 13:13:33,520 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 828 transitions. Word has length 65 [2023-12-02 13:13:33,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:33,520 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 828 transitions. [2023-12-02 13:13:33,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.0) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:13:33,520 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 828 transitions. [2023-12-02 13:13:33,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 13:13:33,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:33,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 13:13:33,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 13:13:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:33,722 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:13:33,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1993388946, now seen corresponding path program 1 times [2023-12-02 13:13:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:13:33,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600054896] [2023-12-02 13:13:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:13:33,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:13:33,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596357907] [2023-12-02 13:13:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:33,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:13:33,729 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:13:33,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 13:13:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:33,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-02 13:13:33,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 13:13:34,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:13:46,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:13:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600054896] [2023-12-02 13:13:46,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:13:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596357907] [2023-12-02 13:13:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596357907] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:13:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [493965240] [2023-12-02 13:13:46,773 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 13:13:46,773 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:13:46,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:13:46,773 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:13:46,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:13:48,350 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 13:13:48,358 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:13:48,360 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:14:28,357 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43181#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 100) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|))) (<= |ULTIMATE.start_main_~y~0#1| 100))' at error location [2023-12-02 13:14:28,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:14:28,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:14:28,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 13:14:28,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334637863] [2023-12-02 13:14:28,357 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:14:28,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:14:28,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:14:28,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:14:28,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2910, Unknown=4, NotChecked=0, Total=3422 [2023-12-02 13:14:28,359 INFO L87 Difference]: Start difference. First operand 710 states and 828 transitions. Second operand has 14 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:14:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:14:30,458 INFO L93 Difference]: Finished difference Result 741 states and 861 transitions. [2023-12-02 13:14:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 13:14:30,459 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 67 [2023-12-02 13:14:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:14:30,462 INFO L225 Difference]: With dead ends: 741 [2023-12-02 13:14:30,462 INFO L226 Difference]: Without dead ends: 740 [2023-12-02 13:14:30,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 127 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1790 ImplicationChecksByTransitivity, 50.0s TimeCoverageRelationStatistics Valid=661, Invalid=3891, Unknown=4, NotChecked=0, Total=4556 [2023-12-02 13:14:30,463 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 255 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:14:30,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 157 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 13:14:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2023-12-02 13:14:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 717. [2023-12-02 13:14:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 677 states have (on average 1.1506646971935008) internal successors, (779), 685 states have internal predecessors, (779), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-02 13:14:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 835 transitions. [2023-12-02 13:14:30,566 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 835 transitions. Word has length 67 [2023-12-02 13:14:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:14:30,566 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 835 transitions. [2023-12-02 13:14:30,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:14:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 835 transitions. [2023-12-02 13:14:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 13:14:30,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:14:30,567 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:14:30,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 13:14:30,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 13:14:30,768 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:14:30,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:14:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 859384139, now seen corresponding path program 1 times [2023-12-02 13:14:30,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:14:30,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988559412] [2023-12-02 13:14:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:30,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:14:30,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:14:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750917327] [2023-12-02 13:14:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:30,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:30,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:14:30,779 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:14:30,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 13:14:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:14:30,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 13:14:30,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:14:31,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:14:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:14:32,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:14:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988559412] [2023-12-02 13:14:32,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:14:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750917327] [2023-12-02 13:14:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750917327] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 13:14:32,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:14:32,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 21 [2023-12-02 13:14:32,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92671899] [2023-12-02 13:14:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:14:32,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 13:14:32,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:14:32,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 13:14:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2023-12-02 13:14:32,321 INFO L87 Difference]: Start difference. First operand 717 states and 835 transitions. Second operand has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 13:14:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:14:33,177 INFO L93 Difference]: Finished difference Result 797 states and 920 transitions. [2023-12-02 13:14:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:14:33,177 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2023-12-02 13:14:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:14:33,180 INFO L225 Difference]: With dead ends: 797 [2023-12-02 13:14:33,180 INFO L226 Difference]: Without dead ends: 604 [2023-12-02 13:14:33,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2023-12-02 13:14:33,180 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:14:33,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 56 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:14:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-12-02 13:14:33,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2023-12-02 13:14:33,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 558 states have (on average 1.1523297491039426) internal successors, (643), 566 states have internal predecessors, (643), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 13:14:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 691 transitions. [2023-12-02 13:14:33,258 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 691 transitions. Word has length 68 [2023-12-02 13:14:33,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:14:33,258 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 691 transitions. [2023-12-02 13:14:33,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 13:14:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 691 transitions. [2023-12-02 13:14:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 13:14:33,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:14:33,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:14:33,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 13:14:33,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:33,460 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 13:14:33,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:14:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1250705549, now seen corresponding path program 1 times [2023-12-02 13:14:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:14:33,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696937470] [2023-12-02 13:14:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:33,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:14:33,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:14:33,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983760729] [2023-12-02 13:14:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:33,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:14:33,470 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:14:33,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9dc20ac-6c6e-43ef-9ed5-30e1af9597ce/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 13:14:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:14:33,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 13:14:33,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:14:34,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:15:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:15:06,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:15:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696937470] [2023-12-02 13:15:06,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:15:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983760729] [2023-12-02 13:15:06,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983760729] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:15:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43498908] [2023-12-02 13:15:06,843 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 13:15:06,843 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:15:06,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:15:06,844 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:15:06,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:15:08,460 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2023-12-02 13:15:08,468 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 13:15:08,470 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:16:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [43498908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:16:05,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:16:05,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [11, 10] total 45 [2023-12-02 13:16:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404209505] [2023-12-02 13:16:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:16:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 13:16:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:16:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 13:16:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1664, Unknown=13, NotChecked=0, Total=2070 [2023-12-02 13:16:05,467 INFO L87 Difference]: Start difference. First operand 594 states and 691 transitions. Second operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 21 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:16:11,566 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 87 DAG size of output: 82 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:16:14,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:16:16,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:16:18,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:16:20,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:16:27,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]