./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/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_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/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_6d04564d-a04b-456f-aa80-de86a603a536/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 357c28cbcf8a6aaf949faeabbb5ae0b19b92db6bb2faeba12cd91e7c958ae977 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:21:07,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:21:07,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 17:21:07,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:21:07,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:21:07,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:21:07,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:21:07,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:21:07,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:21:07,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:21:07,544 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:21:07,544 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:21:07,545 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:21:07,545 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:21:07,546 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:21:07,547 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:21:07,547 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:21:07,548 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:21:07,548 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:21:07,549 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:21:07,549 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:21:07,550 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:21:07,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:21:07,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:21:07,552 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:21:07,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:21:07,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:21:07,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:21:07,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:21:07,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:21:07,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:21:07,555 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:21:07,555 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:21:07,555 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:21:07,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:21:07,556 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:21:07,556 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:21:07,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:21:07,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:21:07,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:07,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:21:07,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:21:07,558 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:21:07,558 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:21:07,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:21:07,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:21:07,559 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:21:07,559 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:21:07,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:21:07,559 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_6d04564d-a04b-456f-aa80-de86a603a536/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 357c28cbcf8a6aaf949faeabbb5ae0b19b92db6bb2faeba12cd91e7c958ae977 [2023-12-02 17:21:07,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:21:07,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:21:07,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:21:07,798 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:21:07,798 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:21:07,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c [2023-12-02 17:21:10,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:21:10,871 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:21:10,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound10.c [2023-12-02 17:21:10,879 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/data/def107fb6/2397d5502a3843cdacbb262525353be5/FLAGa8bb27b6b [2023-12-02 17:21:10,894 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/data/def107fb6/2397d5502a3843cdacbb262525353be5 [2023-12-02 17:21:10,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:21:10,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:21:10,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:10,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:21:10,905 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:21:10,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:10" (1/1) ... [2023-12-02 17:21:10,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f1f50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:10, skipping insertion in model container [2023-12-02 17:21:10,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:21:10" (1/1) ... [2023-12-02 17:21:10,930 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:21:11,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:11,108 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:21:11,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:21:11,144 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:21:11,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11 WrapperNode [2023-12-02 17:21:11,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:21:11,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:11,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:21:11,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:21:11,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,181 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-12-02 17:21:11,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:21:11,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:21:11,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:21:11,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:21:11,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:21:11,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:21:11,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:21:11,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:21:11,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (1/1) ... [2023-12-02 17:21:11,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:21:11,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:11,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:21:11,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:21:11,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:21:11,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:21:11,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:21:11,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:21:11,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:21:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:21:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:21:11,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:21:11,339 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:21:11,342 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:21:11,513 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:21:11,547 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:21:11,547 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 17:21:11,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:11 BoogieIcfgContainer [2023-12-02 17:21:11,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:21:11,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:21:11,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:21:11,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:21:11,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:21:10" (1/3) ... [2023-12-02 17:21:11,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7028d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:11, skipping insertion in model container [2023-12-02 17:21:11,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:21:11" (2/3) ... [2023-12-02 17:21:11,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7028d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:21:11, skipping insertion in model container [2023-12-02 17:21:11,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:11" (3/3) ... [2023-12-02 17:21:11,559 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound10.c [2023-12-02 17:21:11,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:21:11,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-02 17:21:11,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:21:11,662 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;@50dfae13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:21:11,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-02 17:21:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:21:11,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 17:21:11,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:11,675 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:21:11,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:11,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:11,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1203328600, now seen corresponding path program 1 times [2023-12-02 17:21:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:11,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043494698] [2023-12-02 17:21:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:11,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043494698] [2023-12-02 17:21:11,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043494698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:11,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:11,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:21:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413431442] [2023-12-02 17:21:11,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:11,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:21:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:21:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:12,008 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:21:12,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:12,091 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2023-12-02 17:21:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:21:12,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2023-12-02 17:21:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:12,099 INFO L225 Difference]: With dead ends: 72 [2023-12-02 17:21:12,099 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 17:21:12,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:21:12,106 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:12,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:21:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 17:21:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-12-02 17:21:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:21:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-12-02 17:21:12,144 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 16 [2023-12-02 17:21:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:12,146 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-12-02 17:21:12,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 17:21:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-12-02 17:21:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 17:21:12,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:12,148 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:21:12,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:21:12,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:12,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1195344561, now seen corresponding path program 1 times [2023-12-02 17:21:12,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:12,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271528624] [2023-12-02 17:21:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:12,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:12,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51208920] [2023-12-02 17:21:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:12,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:12,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:12,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:12,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:21:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:12,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:21:12,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:12,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:21:12,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271528624] [2023-12-02 17:21:12,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51208920] [2023-12-02 17:21:12,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51208920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:12,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:12,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:21:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286383679] [2023-12-02 17:21:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:21:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:21:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:21:12,348 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 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 17:21:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:12,462 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2023-12-02 17:21:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:21:12,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 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 24 [2023-12-02 17:21:12,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:12,465 INFO L225 Difference]: With dead ends: 55 [2023-12-02 17:21:12,465 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 17:21:12,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:21:12,467 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:12,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 134 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:21:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 17:21:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2023-12-02 17:21:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 35 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:21:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2023-12-02 17:21:12,479 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 24 [2023-12-02 17:21:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:12,480 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2023-12-02 17:21:12,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 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 17:21:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2023-12-02 17:21:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 17:21:12,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:12,481 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:21:12,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:21:12,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:12,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:12,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1599024339, now seen corresponding path program 1 times [2023-12-02 17:21:12,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:12,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855635835] [2023-12-02 17:21:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:12,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:12,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645173256] [2023-12-02 17:21:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:12,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:12,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:12,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:21:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:12,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:21:12,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:12,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:21:12,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:12,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855635835] [2023-12-02 17:21:12,829 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:12,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645173256] [2023-12-02 17:21:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645173256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:21:12,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145746679] [2023-12-02 17:21:12,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:12,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:21:12,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:21:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:21:12,832 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 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 17:21:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:12,913 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2023-12-02 17:21:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:21:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 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 25 [2023-12-02 17:21:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:12,916 INFO L225 Difference]: With dead ends: 80 [2023-12-02 17:21:12,916 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 17:21:12,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:21:12,918 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:12,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:21:12,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 17:21:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-02 17:21:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 40 states have internal predecessors, (48), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:21:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-12-02 17:21:12,930 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 25 [2023-12-02 17:21:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:12,930 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-12-02 17:21:12,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 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 17:21:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-12-02 17:21:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 17:21:12,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:12,932 INFO L195 NwaCegarLoop]: trace histogram [4, 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 17:21:12,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:21:13,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:13,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:13,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1822769980, now seen corresponding path program 1 times [2023-12-02 17:21:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654694248] [2023-12-02 17:21:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:13,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:13,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:13,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694938136] [2023-12-02 17:21:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:13,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:13,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:13,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:13,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:21:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:13,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:21:13,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:13,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:21:13,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654694248] [2023-12-02 17:21:13,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694938136] [2023-12-02 17:21:13,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694938136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:13,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:13,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:21:13,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117900840] [2023-12-02 17:21:13,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:13,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:21:13,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:13,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:21:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:21:13,310 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 17:21:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:13,469 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-12-02 17:21:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:21:13,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2023-12-02 17:21:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:13,471 INFO L225 Difference]: With dead ends: 60 [2023-12-02 17:21:13,471 INFO L226 Difference]: Without dead ends: 57 [2023-12-02 17:21:13,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:21:13,473 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:13,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 83 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:21:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-02 17:21:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2023-12-02 17:21:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 17:21:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-12-02 17:21:13,483 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 32 [2023-12-02 17:21:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:13,484 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-12-02 17:21:13,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 17:21:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-12-02 17:21:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 17:21:13,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:13,486 INFO L195 NwaCegarLoop]: trace histogram [4, 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 17:21:13,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:21:13,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:13,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:13,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash -671294444, now seen corresponding path program 1 times [2023-12-02 17:21:13,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:13,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021925242] [2023-12-02 17:21:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:13,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:13,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790093044] [2023-12-02 17:21:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:13,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:13,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:13,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:13,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:21:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:13,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:21:13,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:13,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:21:13,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021925242] [2023-12-02 17:21:13,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790093044] [2023-12-02 17:21:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790093044] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:21:13,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:21:13,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-12-02 17:21:13,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143736071] [2023-12-02 17:21:13,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:21:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:21:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:21:13,937 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 17:21:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:14,072 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2023-12-02 17:21:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:21:14,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2023-12-02 17:21:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:14,074 INFO L225 Difference]: With dead ends: 65 [2023-12-02 17:21:14,074 INFO L226 Difference]: Without dead ends: 64 [2023-12-02 17:21:14,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-12-02 17:21:14,075 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:14,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 140 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:21:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-02 17:21:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2023-12-02 17:21:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 43 states have internal predecessors, (52), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 17:21:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-12-02 17:21:14,086 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-12-02 17:21:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:14,087 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-12-02 17:21:14,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 17:21:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-12-02 17:21:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 17:21:14,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:14,088 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:21:14,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:21:14,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:14,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:14,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash -671256708, now seen corresponding path program 1 times [2023-12-02 17:21:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:14,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114727080] [2023-12-02 17:21:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:14,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:14,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141835821] [2023-12-02 17:21:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:14,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:14,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:14,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:21:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:14,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:21:14,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:14,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:21:14,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114727080] [2023-12-02 17:21:14,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141835821] [2023-12-02 17:21:14,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141835821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:21:14,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1428853773] [2023-12-02 17:21:14,550 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 17:21:14,550 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:21:14,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:21:14,559 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:21:14,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:21:18,468 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 119 for LOIs [2023-12-02 17:21:18,553 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:21:18,555 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:21:22,260 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1536#(and (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= 1 ~counter~0))' at error location [2023-12-02 17:21:22,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:21:22,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:21:22,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-12-02 17:21:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243160038] [2023-12-02 17:21:22,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:21:22,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:21:22,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:21:22,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 17:21:22,263 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 17:21:22,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:22,986 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2023-12-02 17:21:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 17:21:22,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 33 [2023-12-02 17:21:22,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:22,988 INFO L225 Difference]: With dead ends: 112 [2023-12-02 17:21:22,988 INFO L226 Difference]: Without dead ends: 87 [2023-12-02 17:21:22,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 17:21:22,991 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:22,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 214 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 17:21:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-02 17:21:22,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2023-12-02 17:21:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.25) internal successors, (70), 58 states have internal predecessors, (70), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 17:21:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2023-12-02 17:21:23,001 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 33 [2023-12-02 17:21:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:23,001 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2023-12-02 17:21:23,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 17:21:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2023-12-02 17:21:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 17:21:23,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:23,003 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:21:23,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:21:23,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:23,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:23,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1754090747, now seen corresponding path program 1 times [2023-12-02 17:21:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447802202] [2023-12-02 17:21:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:23,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:23,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459546575] [2023-12-02 17:21:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:23,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:23,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:23,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:21:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:23,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:21:23,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:23,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:21:23,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:23,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447802202] [2023-12-02 17:21:23,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:23,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459546575] [2023-12-02 17:21:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459546575] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:21:23,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:21:23,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-12-02 17:21:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052064905] [2023-12-02 17:21:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:21:23,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:21:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:21:23,438 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 17:21:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:23,856 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2023-12-02 17:21:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:21:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2023-12-02 17:21:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:23,858 INFO L225 Difference]: With dead ends: 105 [2023-12-02 17:21:23,858 INFO L226 Difference]: Without dead ends: 80 [2023-12-02 17:21:23,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-12-02 17:21:23,859 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:23,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 122 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:21:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-02 17:21:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-02 17:21:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 59 states have internal predecessors, (71), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 17:21:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2023-12-02 17:21:23,869 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 37 [2023-12-02 17:21:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:23,869 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2023-12-02 17:21:23,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 17:21:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2023-12-02 17:21:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 17:21:23,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:23,871 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2023-12-02 17:21:23,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:21:24,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:24,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:24,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:24,072 INFO L85 PathProgramCache]: Analyzing trace with hash 406296643, now seen corresponding path program 1 times [2023-12-02 17:21:24,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:24,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382511973] [2023-12-02 17:21:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:24,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:24,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:24,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554287069] [2023-12-02 17:21:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:24,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:24,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:24,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:24,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:21:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:24,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:21:24,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 17:21:24,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:21:24,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:24,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382511973] [2023-12-02 17:21:24,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:24,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554287069] [2023-12-02 17:21:24,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554287069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:21:24,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:21:24,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:21:24,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433221034] [2023-12-02 17:21:24,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:21:24,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:21:24,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:24,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:21:24,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:24,239 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 17:21:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:24,596 INFO L93 Difference]: Finished difference Result 147 states and 181 transitions. [2023-12-02 17:21:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:21:24,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2023-12-02 17:21:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:24,599 INFO L225 Difference]: With dead ends: 147 [2023-12-02 17:21:24,599 INFO L226 Difference]: Without dead ends: 122 [2023-12-02 17:21:24,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:21:24,600 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 28 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:24,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 140 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:21:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-02 17:21:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2023-12-02 17:21:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 79 states have internal predecessors, (99), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 17:21:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 131 transitions. [2023-12-02 17:21:24,620 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 131 transitions. Word has length 41 [2023-12-02 17:21:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:24,620 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 131 transitions. [2023-12-02 17:21:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 17:21:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 131 transitions. [2023-12-02 17:21:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 17:21:24,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:24,622 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1] [2023-12-02 17:21:24,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 17:21:24,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:24,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:24,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash 406397931, now seen corresponding path program 1 times [2023-12-02 17:21:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:24,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928535878] [2023-12-02 17:21:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:24,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:24,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:24,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419286384] [2023-12-02 17:21:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:24,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:24,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:24,839 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:24,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 17:21:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:24,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:21:24,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:24,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 17:21:25,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928535878] [2023-12-02 17:21:25,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:25,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419286384] [2023-12-02 17:21:25,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419286384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:21:25,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2033293380] [2023-12-02 17:21:25,114 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:21:25,114 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:21:25,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:21:25,115 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:21:25,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:21:26,973 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2023-12-02 17:21:26,975 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:21:26,976 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:21:46,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3049#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (= (mod (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|) 4294967296) (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296)) (<= 1 |#StackHeapBarrier|) (<= (+ (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 1) (mod (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 4294967296)) (= |ULTIMATE.start_main_~v~0#1| 0) (= ~counter~0 |ULTIMATE.start_main_#t~post8#1|))' at error location [2023-12-02 17:21:46,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:21:46,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:21:46,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-12-02 17:21:46,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554048400] [2023-12-02 17:21:46,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:21:46,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 17:21:46,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:21:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 17:21:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1359, Unknown=1, NotChecked=0, Total=1640 [2023-12-02 17:21:46,725 INFO L87 Difference]: Start difference. First operand 104 states and 131 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 17:21:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:21:47,736 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2023-12-02 17:21:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 17:21:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 41 [2023-12-02 17:21:47,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:21:47,742 INFO L225 Difference]: With dead ends: 212 [2023-12-02 17:21:47,743 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 17:21:47,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=482, Invalid=2823, Unknown=1, NotChecked=0, Total=3306 [2023-12-02 17:21:47,746 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:21:47,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 196 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 17:21:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 17:21:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2023-12-02 17:21:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 111 states have (on average 1.2522522522522523) internal successors, (139), 113 states have internal predecessors, (139), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 17:21:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 183 transitions. [2023-12-02 17:21:47,763 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 183 transitions. Word has length 41 [2023-12-02 17:21:47,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:21:47,763 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 183 transitions. [2023-12-02 17:21:47,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 17:21:47,763 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 183 transitions. [2023-12-02 17:21:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 17:21:47,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:21:47,765 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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 17:21:47,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 17:21:47,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:47,966 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:21:47,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:21:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1219674066, now seen corresponding path program 1 times [2023-12-02 17:21:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:21:47,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737244953] [2023-12-02 17:21:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:21:47,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:21:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042615346] [2023-12-02 17:21:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:21:47,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:21:47,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:21:47,975 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:21:47,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 17:21:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:21:48,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:21:48,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:21:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:21:48,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:21:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 17:21:48,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:21:48,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737244953] [2023-12-02 17:21:48,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:21:48,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042615346] [2023-12-02 17:21:48,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042615346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:21:48,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253304241] [2023-12-02 17:21:48,214 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-12-02 17:21:48,214 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:21:48,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:21:48,215 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:21:48,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:21:50,815 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2023-12-02 17:21:50,817 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:21:50,818 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:21:59,863 WARN L293 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 100 DAG size of output: 98 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:22:07,416 WARN L293 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 109 DAG size of output: 104 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:22:26,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3879#(and (= (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) (<= 1 |#StackHeapBarrier|) (= ~counter~0 2147483647) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296)))' at error location [2023-12-02 17:22:26,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:22:26,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:22:26,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-02 17:22:26,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68200313] [2023-12-02 17:22:26,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:22:26,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 17:22:26,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:22:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 17:22:26,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 17:22:26,600 INFO L87 Difference]: Start difference. First operand 149 states and 183 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 17:22:28,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:22:28,073 INFO L93 Difference]: Finished difference Result 256 states and 324 transitions. [2023-12-02 17:22:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 17:22:28,074 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 45 [2023-12-02 17:22:28,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:22:28,075 INFO L225 Difference]: With dead ends: 256 [2023-12-02 17:22:28,075 INFO L226 Difference]: Without dead ends: 207 [2023-12-02 17:22:28,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=427, Invalid=3113, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 17:22:28,078 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 95 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:22:28,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 153 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 17:22:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-02 17:22:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 194. [2023-12-02 17:22:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 146 states have (on average 1.2123287671232876) internal successors, (177), 148 states have internal predecessors, (177), 27 states have call successors, (27), 18 states have call predecessors, (27), 18 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 17:22:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 231 transitions. [2023-12-02 17:22:28,094 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 231 transitions. Word has length 45 [2023-12-02 17:22:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:22:28,094 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 231 transitions. [2023-12-02 17:22:28,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 17:22:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 231 transitions. [2023-12-02 17:22:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 17:22:28,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:22:28,096 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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 17:22:28,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 17:22:28,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:22:28,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:22:28,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:22:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1155697485, now seen corresponding path program 1 times [2023-12-02 17:22:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:22:28,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982245606] [2023-12-02 17:22:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:22:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:22:28,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:22:28,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695070149] [2023-12-02 17:22:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:22:28,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:22:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:22:28,308 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:22:28,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:22:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:22:28,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:22:28,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:22:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:22:28,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:22:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 17:22:28,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:22:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982245606] [2023-12-02 17:22:28,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:22:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695070149] [2023-12-02 17:22:28,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695070149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:22:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976952754] [2023-12-02 17:22:28,578 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:22:28,578 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:22:28,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:22:28,579 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:22:28,579 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:22:32,334 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2023-12-02 17:22:32,336 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:22:32,337 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:22:52,594 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4886#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647) (= |ULTIMATE.start_main_~v~0#1| 0))' at error location [2023-12-02 17:22:52,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:22:52,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:22:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-02 17:22:52,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856769111] [2023-12-02 17:22:52,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:22:52,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 17:22:52,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:22:52,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 17:22:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1772, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 17:22:52,598 INFO L87 Difference]: Start difference. First operand 194 states and 231 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-02 17:22:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:22:53,797 INFO L93 Difference]: Finished difference Result 314 states and 383 transitions. [2023-12-02 17:22:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-02 17:22:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 53 [2023-12-02 17:22:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:22:53,800 INFO L225 Difference]: With dead ends: 314 [2023-12-02 17:22:53,800 INFO L226 Difference]: Without dead ends: 254 [2023-12-02 17:22:53,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=614, Invalid=3942, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 17:22:53,803 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 106 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:22:53,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 227 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 17:22:53,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-02 17:22:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 230. [2023-12-02 17:22:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 172 states have (on average 1.180232558139535) internal successors, (203), 175 states have internal predecessors, (203), 32 states have call successors, (32), 23 states have call predecessors, (32), 23 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 17:22:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 267 transitions. [2023-12-02 17:22:53,819 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 267 transitions. Word has length 53 [2023-12-02 17:22:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:22:53,819 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 267 transitions. [2023-12-02 17:22:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2023-12-02 17:22:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 267 transitions. [2023-12-02 17:22:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 17:22:53,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:22:53,821 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:22:53,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 17:22:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 17:22:54,022 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:22:54,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:22:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1663119555, now seen corresponding path program 1 times [2023-12-02 17:22:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:22:54,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435184069] [2023-12-02 17:22:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:22:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:22:54,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:22:54,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189875967] [2023-12-02 17:22:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:22:54,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:22:54,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:22:54,031 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:22:54,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 17:22:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:22:54,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:22:54,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:22:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:22:54,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:22:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 17:22:54,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:22:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435184069] [2023-12-02 17:22:54,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:22:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189875967] [2023-12-02 17:22:54,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189875967] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:22:54,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [41850043] [2023-12-02 17:22:54,416 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:22:54,416 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:22:54,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:22:54,417 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:22:54,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:23:02,145 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 17:23:02,147 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:23:02,148 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:23:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [41850043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:23:14,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:23:14,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [12, 13] total 48 [2023-12-02 17:23:14,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451760196] [2023-12-02 17:23:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:23:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 17:23:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:23:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 17:23:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=1903, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 17:23:14,875 INFO L87 Difference]: Start difference. First operand 230 states and 267 transitions. Second operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:23:31,918 WARN L293 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 86 DAG size of output: 80 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:23:38,621 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 17:23:40,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:23:42,912 WARN L539 Checker$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 17:23:45,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:23:47,029 WARN L539 Checker$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 17:23:50,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:23:53,376 WARN L539 Checker$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 17:23:55,475 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 17:24:04,921 WARN L293 SmtUtils]: Spent 8.61s on a formula simplification. DAG size of input: 106 DAG size of output: 101 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:24:15,722 WARN L293 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 109 DAG size of output: 103 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:24:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:24:17,123 INFO L93 Difference]: Finished difference Result 275 states and 324 transitions. [2023-12-02 17:24:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 17:24:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 57 [2023-12-02 17:24:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:24:17,127 INFO L225 Difference]: With dead ends: 275 [2023-12-02 17:24:17,127 INFO L226 Difference]: Without dead ends: 272 [2023-12-02 17:24:17,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=655, Invalid=2885, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 17:24:17,129 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 25 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:24:17,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 60 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 476 Invalid, 7 Unknown, 0 Unchecked, 23.0s Time] [2023-12-02 17:24:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-02 17:24:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 266. [2023-12-02 17:24:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 200 states have (on average 1.185) internal successors, (237), 203 states have internal predecessors, (237), 37 states have call successors, (37), 26 states have call predecessors, (37), 26 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 17:24:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 311 transitions. [2023-12-02 17:24:17,182 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 311 transitions. Word has length 57 [2023-12-02 17:24:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:24:17,183 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 311 transitions. [2023-12-02 17:24:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:24:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 311 transitions. [2023-12-02 17:24:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 17:24:17,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:24:17,185 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 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] [2023-12-02 17:24:17,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 17:24:17,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 17:24:17,385 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:24:17,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:24:17,386 INFO L85 PathProgramCache]: Analyzing trace with hash 173123246, now seen corresponding path program 1 times [2023-12-02 17:24:17,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:24:17,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709674576] [2023-12-02 17:24:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:17,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:24:17,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:24:17,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572604991] [2023-12-02 17:24:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:24:17,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:24:17,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:24:17,396 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:24:17,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 17:24:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:24:17,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:24:17,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:24:17,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 17:24:17,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:24:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709674576] [2023-12-02 17:24:17,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:24:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572604991] [2023-12-02 17:24:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572604991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1719989070] [2023-12-02 17:24:17,714 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:24:17,714 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:24:17,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:24:17,714 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:24:17,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:24:22,914 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 53 for LOIs [2023-12-02 17:24:22,957 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:24:22,958 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:24:35,951 WARN L293 SmtUtils]: Spent 6.95s on a formula simplification. DAG size of input: 117 DAG size of output: 111 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:25:15,254 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7224#(and (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647))' at error location [2023-12-02 17:25:15,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:25:15,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:25:15,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2023-12-02 17:25:15,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557550622] [2023-12-02 17:25:15,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:25:15,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 17:25:15,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:25:15,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 17:25:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=2072, Unknown=3, NotChecked=0, Total=2352 [2023-12-02 17:25:15,257 INFO L87 Difference]: Start difference. First operand 266 states and 311 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-12-02 17:25:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:25:16,980 INFO L93 Difference]: Finished difference Result 389 states and 462 transitions. [2023-12-02 17:25:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-02 17:25:16,981 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 61 [2023-12-02 17:25:16,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:25:16,983 INFO L225 Difference]: With dead ends: 389 [2023-12-02 17:25:16,983 INFO L226 Difference]: Without dead ends: 340 [2023-12-02 17:25:16,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1955 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=658, Invalid=4741, Unknown=3, NotChecked=0, Total=5402 [2023-12-02 17:25:16,987 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 123 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:25:16,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 229 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:25:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-02 17:25:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 297. [2023-12-02 17:25:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 223 states have (on average 1.1793721973094171) internal successors, (263), 227 states have internal predecessors, (263), 41 states have call successors, (41), 30 states have call predecessors, (41), 30 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 17:25:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 345 transitions. [2023-12-02 17:25:17,035 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 345 transitions. Word has length 61 [2023-12-02 17:25:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:25:17,036 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 345 transitions. [2023-12-02 17:25:17,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 24 states have internal predecessors, (73), 10 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-12-02 17:25:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 345 transitions. [2023-12-02 17:25:17,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 17:25:17,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:25:17,038 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 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] [2023-12-02 17:25:17,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 17:25:17,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 17:25:17,239 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:25:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:25:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 787411137, now seen corresponding path program 1 times [2023-12-02 17:25:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:25:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193797678] [2023-12-02 17:25:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:25:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:25:17,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:25:17,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500059494] [2023-12-02 17:25:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:25:17,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:25:17,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:25:17,248 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:25:17,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:25:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:25:17,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 17:25:17,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:25:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 56 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:25:17,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:25:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 17:25:17,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:25:17,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193797678] [2023-12-02 17:25:17,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:25:17,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500059494] [2023-12-02 17:25:17,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500059494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:25:17,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250607748] [2023-12-02 17:25:17,629 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:25:17,630 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:25:17,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:25:17,630 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:25:17,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:25:24,427 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:25:24,428 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:25:24,429 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:25:38,574 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 91 DAG size of output: 22 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:25:41,308 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8669#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (= ~counter~0 |ULTIMATE.start_main_#t~post8#1|))' at error location [2023-12-02 17:25:41,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:25:41,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:25:41,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 26 [2023-12-02 17:25:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880216894] [2023-12-02 17:25:41,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:25:41,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 17:25:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:25:41,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 17:25:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2152, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 17:25:41,311 INFO L87 Difference]: Start difference. First operand 297 states and 345 transitions. Second operand has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 10 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-02 17:25:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:25:44,328 INFO L93 Difference]: Finished difference Result 406 states and 479 transitions. [2023-12-02 17:25:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-02 17:25:44,328 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 10 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 69 [2023-12-02 17:25:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:25:44,331 INFO L225 Difference]: With dead ends: 406 [2023-12-02 17:25:44,331 INFO L226 Difference]: Without dead ends: 357 [2023-12-02 17:25:44,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=727, Invalid=5279, Unknown=0, NotChecked=0, Total=6006 [2023-12-02 17:25:44,334 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 139 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:25:44,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 263 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:25:44,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-02 17:25:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 327. [2023-12-02 17:25:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 247 states have (on average 1.1781376518218623) internal successors, (291), 249 states have internal predecessors, (291), 44 states have call successors, (44), 33 states have call predecessors, (44), 33 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 17:25:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 379 transitions. [2023-12-02 17:25:44,379 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 379 transitions. Word has length 69 [2023-12-02 17:25:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:25:44,379 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 379 transitions. [2023-12-02 17:25:44,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.230769230769231) internal successors, (84), 26 states have internal predecessors, (84), 10 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2023-12-02 17:25:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 379 transitions. [2023-12-02 17:25:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:25:44,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:25:44,381 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 17:25:44,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:25:44,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 17:25:44,581 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:25:44,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:25:44,581 INFO L85 PathProgramCache]: Analyzing trace with hash -167811134, now seen corresponding path program 1 times [2023-12-02 17:25:44,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:25:44,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246983010] [2023-12-02 17:25:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:25:44,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:25:44,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:25:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345251157] [2023-12-02 17:25:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:25:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:25:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:25:44,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:25:44,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 17:25:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:25:44,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 17:25:44,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:25:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 6 proven. 80 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:25:44,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:25:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 17:25:44,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:25:44,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246983010] [2023-12-02 17:25:44,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:25:44,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345251157] [2023-12-02 17:25:44,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345251157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:25:44,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258246206] [2023-12-02 17:25:44,994 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:25:44,994 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:25:44,994 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:25:44,994 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:25:44,994 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:25:49,009 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:25:49,010 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:25:49,011 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:26:02,683 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10233#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|))' at error location [2023-12-02 17:26:02,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:26:02,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:26:02,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 28 [2023-12-02 17:26:02,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076128531] [2023-12-02 17:26:02,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:26:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 17:26:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:26:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 17:26:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=2541, Unknown=1, NotChecked=0, Total=2862 [2023-12-02 17:26:02,687 INFO L87 Difference]: Start difference. First operand 327 states and 379 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-02 17:26:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:26:04,234 INFO L93 Difference]: Finished difference Result 461 states and 537 transitions. [2023-12-02 17:26:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 17:26:04,234 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) Word has length 77 [2023-12-02 17:26:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:26:04,236 INFO L225 Difference]: With dead ends: 461 [2023-12-02 17:26:04,236 INFO L226 Difference]: Without dead ends: 412 [2023-12-02 17:26:04,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 171 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2753 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=831, Invalid=6650, Unknown=1, NotChecked=0, Total=7482 [2023-12-02 17:26:04,239 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 129 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:26:04,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 325 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:26:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-12-02 17:26:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 342. [2023-12-02 17:26:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 258 states have (on average 1.1705426356589148) internal successors, (302), 261 states have internal predecessors, (302), 46 states have call successors, (46), 35 states have call predecessors, (46), 35 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 17:26:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2023-12-02 17:26:04,315 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 77 [2023-12-02 17:26:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:26:04,315 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2023-12-02 17:26:04,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-02 17:26:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2023-12-02 17:26:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:26:04,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:26:04,318 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 17:26:04,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 17:26:04,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:04,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:26:04,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:26:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash -556294206, now seen corresponding path program 2 times [2023-12-02 17:26:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:26:04,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207850307] [2023-12-02 17:26:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:04,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:26:04,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:26:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813031755] [2023-12-02 17:26:04,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:26:04,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:04,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:26:04,529 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:26:04,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 17:26:04,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 17:26:04,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:26:04,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:26:04,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:26:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 17:26:04,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:26:04,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:26:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207850307] [2023-12-02 17:26:04,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:26:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813031755] [2023-12-02 17:26:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813031755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:26:04,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:26:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:26:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974441661] [2023-12-02 17:26:04,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:26:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:26:04,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:26:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:26:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:26:04,655 INFO L87 Difference]: Start difference. First operand 342 states and 394 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 17:26:04,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:26:04,720 INFO L93 Difference]: Finished difference Result 478 states and 572 transitions. [2023-12-02 17:26:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:26:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2023-12-02 17:26:04,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:26:04,722 INFO L225 Difference]: With dead ends: 478 [2023-12-02 17:26:04,723 INFO L226 Difference]: Without dead ends: 365 [2023-12-02 17:26:04,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:26:04,723 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:26:04,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:26:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-12-02 17:26:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2023-12-02 17:26:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 257 states have (on average 1.1906614785992218) internal successors, (306), 260 states have internal predecessors, (306), 46 states have call successors, (46), 31 states have call predecessors, (46), 31 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 17:26:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 398 transitions. [2023-12-02 17:26:04,767 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 398 transitions. Word has length 77 [2023-12-02 17:26:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:26:04,767 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 398 transitions. [2023-12-02 17:26:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 17:26:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 398 transitions. [2023-12-02 17:26:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:26:04,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:26:04,769 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 4, 4, 4, 4, 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] [2023-12-02 17:26:04,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-02 17:26:04,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:04,973 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:26:04,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:26:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1699408572, now seen corresponding path program 1 times [2023-12-02 17:26:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:26:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124562846] [2023-12-02 17:26:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:04,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:26:04,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:26:04,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115217152] [2023-12-02 17:26:04,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:04,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:04,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:26:04,983 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:26:04,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 17:26:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:26:05,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:26:05,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:26:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-02 17:26:05,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:26:05,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:26:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124562846] [2023-12-02 17:26:05,099 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:26:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115217152] [2023-12-02 17:26:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115217152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:26:05,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:26:05,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:26:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99389415] [2023-12-02 17:26:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:26:05,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:26:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:26:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:26:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:26:05,101 INFO L87 Difference]: Start difference. First operand 337 states and 398 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 17:26:05,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:26:05,201 INFO L93 Difference]: Finished difference Result 550 states and 680 transitions. [2023-12-02 17:26:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:26:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2023-12-02 17:26:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:26:05,205 INFO L225 Difference]: With dead ends: 550 [2023-12-02 17:26:05,205 INFO L226 Difference]: Without dead ends: 406 [2023-12-02 17:26:05,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:26:05,206 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:26:05,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 84 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:26:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-12-02 17:26:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 398. [2023-12-02 17:26:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 309 states have (on average 1.203883495145631) internal successors, (372), 313 states have internal predecessors, (372), 55 states have call successors, (55), 31 states have call predecessors, (55), 31 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-02 17:26:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 482 transitions. [2023-12-02 17:26:05,288 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 482 transitions. Word has length 77 [2023-12-02 17:26:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:26:05,289 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 482 transitions. [2023-12-02 17:26:05,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 17:26:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 482 transitions. [2023-12-02 17:26:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:26:05,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:26:05,291 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 17:26:05,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 17:26:05,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 17:26:05,491 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:26:05,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:26:05,492 INFO L85 PathProgramCache]: Analyzing trace with hash 171661080, now seen corresponding path program 2 times [2023-12-02 17:26:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:26:05,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637534492] [2023-12-02 17:26:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:26:05,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:26:05,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292769916] [2023-12-02 17:26:05,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:26:05,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:05,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:26:05,504 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:26:05,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 17:26:05,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 17:26:05,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:26:05,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:26:05,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:26:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:26:05,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:26:05,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:26:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637534492] [2023-12-02 17:26:05,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:26:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292769916] [2023-12-02 17:26:05,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292769916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:26:05,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:26:05,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:26:05,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836289866] [2023-12-02 17:26:05,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:26:05,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:26:05,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:26:05,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:26:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:26:05,577 INFO L87 Difference]: Start difference. First operand 398 states and 482 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:26:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:26:05,798 INFO L93 Difference]: Finished difference Result 424 states and 507 transitions. [2023-12-02 17:26:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:26:05,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2023-12-02 17:26:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:26:05,802 INFO L225 Difference]: With dead ends: 424 [2023-12-02 17:26:05,802 INFO L226 Difference]: Without dead ends: 422 [2023-12-02 17:26:05,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:26:05,804 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:26:05,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 96 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:26:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-02 17:26:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 383. [2023-12-02 17:26:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 297 states have (on average 1.1717171717171717) internal successors, (348), 301 states have internal predecessors, (348), 52 states have call successors, (52), 31 states have call predecessors, (52), 31 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 17:26:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 452 transitions. [2023-12-02 17:26:05,899 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 452 transitions. Word has length 77 [2023-12-02 17:26:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:26:05,899 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 452 transitions. [2023-12-02 17:26:05,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:26:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 452 transitions. [2023-12-02 17:26:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:26:05,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:26:05,901 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2023-12-02 17:26:05,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-02 17:26:06,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 17:26:06,107 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:26:06,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:26:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1619968906, now seen corresponding path program 2 times [2023-12-02 17:26:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:26:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733645948] [2023-12-02 17:26:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:26:06,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:26:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411828798] [2023-12-02 17:26:06,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:26:06,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:06,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:26:06,118 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:26:06,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 17:26:06,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 17:26:06,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:26:06,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:26:06,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:26:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-02 17:26:06,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:26:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-12-02 17:26:06,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:26:06,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733645948] [2023-12-02 17:26:06,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:26:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411828798] [2023-12-02 17:26:06,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411828798] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:26:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2108980262] [2023-12-02 17:26:06,325 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:26:06,326 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:26:06,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:26:06,326 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:26:06,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:26:10,087 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-12-02 17:26:10,088 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:26:10,089 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:26:51,359 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16081#(and (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647))' at error location [2023-12-02 17:26:51,360 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:26:51,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:26:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 17:26:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747057496] [2023-12-02 17:26:51,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:26:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:26:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:26:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:26:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1151, Unknown=1, NotChecked=0, Total=1332 [2023-12-02 17:26:51,361 INFO L87 Difference]: Start difference. First operand 383 states and 452 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:26:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:26:51,945 INFO L93 Difference]: Finished difference Result 420 states and 493 transitions. [2023-12-02 17:26:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:26:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2023-12-02 17:26:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:26:51,947 INFO L225 Difference]: With dead ends: 420 [2023-12-02 17:26:51,947 INFO L226 Difference]: Without dead ends: 418 [2023-12-02 17:26:51,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 188 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=227, Invalid=1494, Unknown=1, NotChecked=0, Total=1722 [2023-12-02 17:26:51,948 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 64 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:26:51,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 164 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:26:51,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-02 17:26:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 406. [2023-12-02 17:26:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 315 states have (on average 1.1650793650793652) internal successors, (367), 322 states have internal predecessors, (367), 55 states have call successors, (55), 33 states have call predecessors, (55), 33 states have return successors, (55), 50 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-02 17:26:52,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 477 transitions. [2023-12-02 17:26:52,007 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 477 transitions. Word has length 77 [2023-12-02 17:26:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:26:52,007 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 477 transitions. [2023-12-02 17:26:52,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:26:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 477 transitions. [2023-12-02 17:26:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:26:52,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:26:52,009 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-12-02 17:26:52,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 17:26:52,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:52,210 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:26:52,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:26:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash 318671508, now seen corresponding path program 1 times [2023-12-02 17:26:52,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:26:52,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071845013] [2023-12-02 17:26:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:52,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:26:52,220 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:26:52,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350624877] [2023-12-02 17:26:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:52,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:52,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:26:52,221 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:26:52,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 17:26:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:26:52,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:26:52,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:26:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 17:26:52,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:26:52,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:26:52,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071845013] [2023-12-02 17:26:52,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:26:52,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350624877] [2023-12-02 17:26:52,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350624877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:26:52,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:26:52,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:26:52,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917349702] [2023-12-02 17:26:52,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:26:52,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:26:52,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:26:52,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:26:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:26:52,319 INFO L87 Difference]: Start difference. First operand 406 states and 477 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 17:26:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:26:53,119 INFO L93 Difference]: Finished difference Result 441 states and 509 transitions. [2023-12-02 17:26:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:26:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 77 [2023-12-02 17:26:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:26:53,122 INFO L225 Difference]: With dead ends: 441 [2023-12-02 17:26:53,122 INFO L226 Difference]: Without dead ends: 361 [2023-12-02 17:26:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:26:53,123 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 13 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:26:53,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 129 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 17:26:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-02 17:26:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 343. [2023-12-02 17:26:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 263 states have (on average 1.155893536121673) internal successors, (304), 267 states have internal predecessors, (304), 46 states have call successors, (46), 31 states have call predecessors, (46), 31 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 17:26:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 396 transitions. [2023-12-02 17:26:53,193 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 396 transitions. Word has length 77 [2023-12-02 17:26:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:26:53,193 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 396 transitions. [2023-12-02 17:26:53,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-02 17:26:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 396 transitions. [2023-12-02 17:26:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 17:26:53,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:26:53,195 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:26:53,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 17:26:53,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:53,398 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:26:53,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:26:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash 985169146, now seen corresponding path program 1 times [2023-12-02 17:26:53,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:26:53,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763250536] [2023-12-02 17:26:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:26:53,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:26:53,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390942601] [2023-12-02 17:26:53,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:26:53,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:26:53,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:26:53,409 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:26:53,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:26:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:26:53,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 17:26:53,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:26:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:26:53,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:26:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 17:26:53,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:26:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763250536] [2023-12-02 17:26:53,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:26:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390942601] [2023-12-02 17:26:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390942601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:26:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2094163254] [2023-12-02 17:26:53,833 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-12-02 17:26:53,833 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:26:53,833 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:26:53,834 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:26:53,834 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:26:55,782 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 119 for LOIs [2023-12-02 17:26:56,188 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:26:56,189 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:27:04,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19018#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (<= 1 |#StackHeapBarrier|) (<= ~counter~0 2147483647) (= ~counter~0 |ULTIMATE.start_main_#t~post8#1|))' at error location [2023-12-02 17:27:04,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:27:04,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:27:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 23 [2023-12-02 17:27:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627033629] [2023-12-02 17:27:04,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:27:04,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 17:27:04,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:27:04,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 17:27:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1657, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 17:27:04,399 INFO L87 Difference]: Start difference. First operand 343 states and 396 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-02 17:27:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:27:05,827 INFO L93 Difference]: Finished difference Result 487 states and 571 transitions. [2023-12-02 17:27:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 17:27:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) Word has length 77 [2023-12-02 17:27:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:27:05,830 INFO L225 Difference]: With dead ends: 487 [2023-12-02 17:27:05,831 INFO L226 Difference]: Without dead ends: 378 [2023-12-02 17:27:05,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 173 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=694, Invalid=3338, Unknown=0, NotChecked=0, Total=4032 [2023-12-02 17:27:05,833 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 91 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:27:05,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 244 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 17:27:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-02 17:27:05,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 363. [2023-12-02 17:27:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 279 states have (on average 1.1541218637992832) internal successors, (322), 283 states have internal predecessors, (322), 48 states have call successors, (48), 33 states have call predecessors, (48), 33 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 17:27:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 418 transitions. [2023-12-02 17:27:05,890 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 418 transitions. Word has length 77 [2023-12-02 17:27:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:27:05,891 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 418 transitions. [2023-12-02 17:27:05,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-02 17:27:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 418 transitions. [2023-12-02 17:27:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 17:27:05,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:27:05,892 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-02 17:27:05,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 17:27:06,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:27:06,092 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:27:06,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:27:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1077152777, now seen corresponding path program 1 times [2023-12-02 17:27:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:27:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048240877] [2023-12-02 17:27:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:27:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:27:06,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:27:06,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043725083] [2023-12-02 17:27:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:27:06,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:27:06,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:27:06,103 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:27:06,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 17:27:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:27:06,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 17:27:06,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:27:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:27:06,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:27:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 17:27:06,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:27:06,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048240877] [2023-12-02 17:27:06,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:27:06,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043725083] [2023-12-02 17:27:06,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043725083] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:27:06,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [958348657] [2023-12-02 17:27:06,485 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:27:06,485 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:27:06,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:27:06,486 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:27:06,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:27:10,451 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:27:10,452 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:27:10,453 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:27:27,751 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20741#(and (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= 0 (+ ~counter~0 2147483649)))' at error location [2023-12-02 17:27:27,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:27:27,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:27:27,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 27 [2023-12-02 17:27:27,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786771425] [2023-12-02 17:27:27,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:27:27,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 17:27:27,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:27:27,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 17:27:27,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2266, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 17:27:27,753 INFO L87 Difference]: Start difference. First operand 363 states and 418 transitions. Second operand has 27 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-02 17:27:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:27:33,457 INFO L93 Difference]: Finished difference Result 596 states and 686 transitions. [2023-12-02 17:27:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-02 17:27:33,458 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) Word has length 81 [2023-12-02 17:27:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:27:33,460 INFO L225 Difference]: With dead ends: 596 [2023-12-02 17:27:33,461 INFO L226 Difference]: Without dead ends: 487 [2023-12-02 17:27:33,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 185 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2206 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=764, Invalid=6042, Unknown=0, NotChecked=0, Total=6806 [2023-12-02 17:27:33,462 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 122 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:27:33,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 209 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 17:27:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-12-02 17:27:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 432. [2023-12-02 17:27:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 331 states have (on average 1.1419939577039275) internal successors, (378), 336 states have internal predecessors, (378), 56 states have call successors, (56), 42 states have call predecessors, (56), 42 states have return successors, (56), 53 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 17:27:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 490 transitions. [2023-12-02 17:27:33,525 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 490 transitions. Word has length 81 [2023-12-02 17:27:33,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:27:33,526 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 490 transitions. [2023-12-02 17:27:33,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 10 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 10 states have call predecessors, (22), 10 states have call successors, (22) [2023-12-02 17:27:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 490 transitions. [2023-12-02 17:27:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 17:27:33,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:27:33,528 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-12-02 17:27:33,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 17:27:33,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 17:27:33,729 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:27:33,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:27:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1549781825, now seen corresponding path program 3 times [2023-12-02 17:27:33,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:27:33,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748489529] [2023-12-02 17:27:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:27:33,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:27:33,739 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:27:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34167675] [2023-12-02 17:27:33,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:27:33,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:27:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:27:33,740 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:27:33,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 17:27:33,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:27:33,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:27:33,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:27:33,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:27:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 17:27:33,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:27:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-02 17:27:33,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:27:33,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748489529] [2023-12-02 17:27:33,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:27:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34167675] [2023-12-02 17:27:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34167675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:27:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [489611288] [2023-12-02 17:27:33,953 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:27:33,953 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:27:33,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:27:33,954 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:27:33,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:27:39,909 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:27:39,910 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:27:39,911 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:27:49,440 WARN L293 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 92 DAG size of output: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:27:57,897 WARN L293 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 91 DAG size of output: 22 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:28:02,257 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22748#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (= ~counter~0 |ULTIMATE.start_main_#t~post8#1|))' at error location [2023-12-02 17:28:02,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:28:02,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:28:02,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-02 17:28:02,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420814981] [2023-12-02 17:28:02,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:28:02,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 17:28:02,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:28:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 17:28:02,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1244, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 17:28:02,259 INFO L87 Difference]: Start difference. First operand 432 states and 490 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 17:28:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:02,989 INFO L93 Difference]: Finished difference Result 476 states and 538 transitions. [2023-12-02 17:28:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 17:28:02,989 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 85 [2023-12-02 17:28:02,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:02,991 INFO L225 Difference]: With dead ends: 476 [2023-12-02 17:28:02,991 INFO L226 Difference]: Without dead ends: 474 [2023-12-02 17:28:02,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=308, Invalid=1672, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 17:28:02,992 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 70 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:02,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 141 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:28:02,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-02 17:28:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 432. [2023-12-02 17:28:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 330 states have (on average 1.1363636363636365) internal successors, (375), 335 states have internal predecessors, (375), 57 states have call successors, (57), 44 states have call predecessors, (57), 44 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 17:28:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 489 transitions. [2023-12-02 17:28:03,053 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 489 transitions. Word has length 85 [2023-12-02 17:28:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:03,053 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 489 transitions. [2023-12-02 17:28:03,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 17:28:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 489 transitions. [2023-12-02 17:28:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 17:28:03,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:03,055 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 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] [2023-12-02 17:28:03,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 17:28:03,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 17:28:03,255 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:28:03,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1825015577, now seen corresponding path program 3 times [2023-12-02 17:28:03,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:28:03,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337362161] [2023-12-02 17:28:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:28:03,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:28:03,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651853760] [2023-12-02 17:28:03,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:28:03,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:03,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:28:03,265 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:28:03,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 17:28:03,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:28:03,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:28:03,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:28:03,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-02 17:28:03,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:28:03,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:28:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337362161] [2023-12-02 17:28:03,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:28:03,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651853760] [2023-12-02 17:28:03,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651853760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:28:03,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:28:03,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:28:03,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96032285] [2023-12-02 17:28:03,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:28:03,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:28:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:28:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:28:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:28:03,369 INFO L87 Difference]: Start difference. First operand 432 states and 489 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:28:03,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:03,941 INFO L93 Difference]: Finished difference Result 444 states and 498 transitions. [2023-12-02 17:28:03,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:28:03,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2023-12-02 17:28:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:03,944 INFO L225 Difference]: With dead ends: 444 [2023-12-02 17:28:03,944 INFO L226 Difference]: Without dead ends: 423 [2023-12-02 17:28:03,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:28:03,945 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 19 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:03,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 99 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:28:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-12-02 17:28:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 416. [2023-12-02 17:28:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 316 states have (on average 1.1265822784810127) internal successors, (356), 321 states have internal predecessors, (356), 55 states have call successors, (55), 44 states have call predecessors, (55), 44 states have return successors, (55), 50 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-02 17:28:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 466 transitions. [2023-12-02 17:28:04,023 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 466 transitions. Word has length 85 [2023-12-02 17:28:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:04,024 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 466 transitions. [2023-12-02 17:28:04,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:28:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 466 transitions. [2023-12-02 17:28:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 17:28:04,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:04,025 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:28:04,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 17:28:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:04,226 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:28:04,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1732662533, now seen corresponding path program 2 times [2023-12-02 17:28:04,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:28:04,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196643234] [2023-12-02 17:28:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:28:04,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:28:04,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197445845] [2023-12-02 17:28:04,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:28:04,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:04,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:28:04,235 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:28:04,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 17:28:04,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 17:28:04,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:28:04,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:28:04,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-02 17:28:04,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:28:04,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:28:04,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196643234] [2023-12-02 17:28:04,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:28:04,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197445845] [2023-12-02 17:28:04,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197445845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:28:04,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:28:04,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:28:04,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429022279] [2023-12-02 17:28:04,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:28:04,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:28:04,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:28:04,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:28:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:28:04,313 INFO L87 Difference]: Start difference. First operand 416 states and 466 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:28:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:04,871 INFO L93 Difference]: Finished difference Result 439 states and 488 transitions. [2023-12-02 17:28:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:28:04,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2023-12-02 17:28:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:04,874 INFO L225 Difference]: With dead ends: 439 [2023-12-02 17:28:04,874 INFO L226 Difference]: Without dead ends: 438 [2023-12-02 17:28:04,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:28:04,874 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:04,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 98 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 17:28:04,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-02 17:28:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 421. [2023-12-02 17:28:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 320 states have (on average 1.125) internal successors, (360), 325 states have internal predecessors, (360), 55 states have call successors, (55), 45 states have call predecessors, (55), 45 states have return successors, (55), 50 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-02 17:28:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 470 transitions. [2023-12-02 17:28:04,934 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 470 transitions. Word has length 85 [2023-12-02 17:28:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:04,935 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 470 transitions. [2023-12-02 17:28:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:28:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 470 transitions. [2023-12-02 17:28:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 17:28:04,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:04,936 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-02 17:28:04,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 17:28:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:05,137 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:28:05,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1161839538, now seen corresponding path program 2 times [2023-12-02 17:28:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:28:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932866725] [2023-12-02 17:28:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:28:05,146 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:28:05,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097275973] [2023-12-02 17:28:05,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:28:05,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:05,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:28:05,147 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:28:05,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 17:28:05,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 17:28:05,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:28:05,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:28:05,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 17:28:05,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:28:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-02 17:28:05,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:28:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932866725] [2023-12-02 17:28:05,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:28:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097275973] [2023-12-02 17:28:05,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097275973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:28:05,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18465893] [2023-12-02 17:28:05,334 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:28:05,334 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:28:05,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:28:05,334 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:28:05,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:28:10,596 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 17:28:10,597 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:28:10,598 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:28:29,206 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27451#(and (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= 0 (+ ~counter~0 2147483649)))' at error location [2023-12-02 17:28:29,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:28:29,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:28:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-02 17:28:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289136910] [2023-12-02 17:28:29,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:28:29,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 17:28:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:28:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 17:28:29,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 17:28:29,208 INFO L87 Difference]: Start difference. First operand 421 states and 470 transitions. Second operand has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:28:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:31,337 INFO L93 Difference]: Finished difference Result 546 states and 614 transitions. [2023-12-02 17:28:31,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 17:28:31,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2023-12-02 17:28:31,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:31,340 INFO L225 Difference]: With dead ends: 546 [2023-12-02 17:28:31,340 INFO L226 Difference]: Without dead ends: 545 [2023-12-02 17:28:31,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=399, Invalid=2463, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 17:28:31,341 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 85 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:31,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 201 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 17:28:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-12-02 17:28:31,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 474. [2023-12-02 17:28:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 368 states have (on average 1.127717391304348) internal successors, (415), 372 states have internal predecessors, (415), 58 states have call successors, (58), 47 states have call predecessors, (58), 47 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 17:28:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 531 transitions. [2023-12-02 17:28:31,425 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 531 transitions. Word has length 89 [2023-12-02 17:28:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:31,425 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 531 transitions. [2023-12-02 17:28:31,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 16 states have internal predecessors, (50), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:28:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 531 transitions. [2023-12-02 17:28:31,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 17:28:31,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:31,427 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 7, 7, 6, 6, 6, 5, 4, 3, 3, 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] [2023-12-02 17:28:31,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 17:28:31,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 17:28:31,628 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:28:31,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -482739995, now seen corresponding path program 1 times [2023-12-02 17:28:31,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:28:31,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777817798] [2023-12-02 17:28:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:31,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:28:31,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:28:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885437776] [2023-12-02 17:28:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:31,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:28:31,639 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:28:31,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 17:28:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:28:31,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 17:28:31,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 30 proven. 172 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 17:28:31,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:28:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 30 proven. 100 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 17:28:32,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:28:32,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777817798] [2023-12-02 17:28:32,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:28:32,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885437776] [2023-12-02 17:28:32,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885437776] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:28:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992212090] [2023-12-02 17:28:32,105 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:28:32,105 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:28:32,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:28:32,105 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:28:32,106 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:28:35,871 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-12-02 17:28:35,872 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:28:35,873 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:28:41,116 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29492#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647) (= |ULTIMATE.start_main_~v~0#1| 0))' at error location [2023-12-02 17:28:41,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:28:41,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:28:41,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 22 [2023-12-02 17:28:41,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500522775] [2023-12-02 17:28:41,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:28:41,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 17:28:41,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:28:41,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 17:28:41,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 17:28:41,118 INFO L87 Difference]: Start difference. First operand 474 states and 531 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 10 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-02 17:28:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:42,716 INFO L93 Difference]: Finished difference Result 678 states and 766 transitions. [2023-12-02 17:28:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-02 17:28:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 10 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 97 [2023-12-02 17:28:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:42,718 INFO L225 Difference]: With dead ends: 678 [2023-12-02 17:28:42,719 INFO L226 Difference]: Without dead ends: 524 [2023-12-02 17:28:42,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 224 SyntacticMatches, 22 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1752 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=614, Invalid=4078, Unknown=0, NotChecked=0, Total=4692 [2023-12-02 17:28:42,720 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 70 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:42,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 236 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 17:28:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-12-02 17:28:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 466. [2023-12-02 17:28:42,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 362 states have (on average 1.12707182320442) internal successors, (408), 366 states have internal predecessors, (408), 57 states have call successors, (57), 46 states have call predecessors, (57), 46 states have return successors, (57), 53 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-02 17:28:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 522 transitions. [2023-12-02 17:28:42,807 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 522 transitions. Word has length 97 [2023-12-02 17:28:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:42,808 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 522 transitions. [2023-12-02 17:28:42,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 10 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-02 17:28:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 522 transitions. [2023-12-02 17:28:42,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 17:28:42,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:42,810 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 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 17:28:42,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 17:28:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 17:28:43,010 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 17:28:43,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:43,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2031864787, now seen corresponding path program 3 times [2023-12-02 17:28:43,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:28:43,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182687131] [2023-12-02 17:28:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:28:43,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:28:43,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817784506] [2023-12-02 17:28:43,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 17:28:43,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:28:43,021 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:28:43,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 17:28:43,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 17:28:43,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:28:43,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:28:43,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 71 proven. 17 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-02 17:28:43,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:28:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 35 proven. 11 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 17:28:43,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:28:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182687131] [2023-12-02 17:28:43,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:28:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817784506] [2023-12-02 17:28:43,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817784506] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:28:43,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [492636721] [2023-12-02 17:28:43,337 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 17:28:43,337 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:28:43,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:28:43,337 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:28:43,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:28:49,901 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 106 for LOIs [2023-12-02 17:28:50,281 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 17:28:50,282 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:28:58,711 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 106 DAG size of output: 86 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:29:11,599 WARN L293 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 110 DAG size of output: 90 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:29:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [492636721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:29:14,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:29:14,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [12, 12] total 48 [2023-12-02 17:29:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959303556] [2023-12-02 17:29:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:29:14,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 17:29:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:29:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 17:29:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1847, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 17:29:14,570 INFO L87 Difference]: Start difference. First operand 466 states and 522 transitions. Second operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:29:21,815 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 17:29:24,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:29:26,943 WARN L539 Checker$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 17:29:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:29:27,786 INFO L93 Difference]: Finished difference Result 466 states and 522 transitions. [2023-12-02 17:29:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 17:29:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 97 [2023-12-02 17:29:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:29:27,786 INFO L225 Difference]: With dead ends: 466 [2023-12-02 17:29:27,787 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 17:29:27,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=738, Invalid=2802, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 17:29:27,788 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:29:27,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 7 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 452 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2023-12-02 17:29:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 17:29:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 17:29:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:29:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 17:29:27,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 97 [2023-12-02 17:29:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:29:27,789 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 17:29:27,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:29:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 17:29:27,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 17:29:27,791 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-12-02 17:29:27,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-12-02 17:29:27,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-12-02 17:29:27,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-12-02 17:29:27,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-12-02 17:29:27,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-12-02 17:29:27,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-02 17:29:27,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 17:29:27,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 17:29:51,822 WARN L293 SmtUtils]: Spent 21.94s on a formula simplification. DAG size of input: 297 DAG size of output: 99 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 17:30:05,581 WARN L293 SmtUtils]: Spent 13.24s on a formula simplification. DAG size of input: 160 DAG size of output: 88 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-12-02 17:30:16,215 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse2 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 .cse1) (= ~counter~0 0) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (<= .cse1 65535) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse2 0) 48) (= 49 (select .cse0 3)) (= (select .cse2 1) 0))) [2023-12-02 17:30:16,215 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-12-02 17:30:16,215 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-12-02 17:30:16,215 INFO L899 garLoopResultBuilder]: For program point L52-1(line 52) no Hoare annotation was computed. [2023-12-02 17:30:16,216 INFO L899 garLoopResultBuilder]: For program point L52-2(lines 52 58) no Hoare annotation was computed. [2023-12-02 17:30:16,216 INFO L895 garLoopResultBuilder]: At program point L52-4(lines 52 58) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= ~counter~0 11)) [2023-12-02 17:30:16,216 INFO L895 garLoopResultBuilder]: At program point L52-5(lines 39 59) the Hoare annotation is: (let ((.cse1 (<= 1 |#StackHeapBarrier|)) (.cse0 (<= 2 ~counter~0))) (or (and .cse0 .cse1 (<= ~counter~0 12)) (let ((.cse3 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse4 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse2 (select |#memory_int| 2)) (.cse5 (select |#memory_int| 1))) (and (= (select .cse2 0) 108) (= 7 (select |#length| 2)) (= (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) (= (select |#length| 3) 12) .cse1 (<= .cse3 65535) (= (select .cse2 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse2 1) 99) (= (select .cse2 4) 46) (<= 1 .cse4) (= ~counter~0 0) (<= 1 .cse3) (= (select |#valid| 1) 1) (= (select .cse2 6) 0) (<= .cse4 65535) (= 109 (select .cse2 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse5 0) 48) (= 49 (select .cse2 3)) (= (select .cse5 1) 0))) (and .cse0 (<= ~counter~0 10) (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~x~0#1| 4294967296))))) [2023-12-02 17:30:16,216 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-12-02 17:30:16,216 INFO L899 garLoopResultBuilder]: For program point L44-2(line 44) no Hoare annotation was computed. [2023-12-02 17:30:16,216 INFO L899 garLoopResultBuilder]: For program point L44-3(lines 44 50) no Hoare annotation was computed. [2023-12-02 17:30:16,216 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (let ((.cse0 (<= ~counter~0 10))) (or (and (or (and .cse0 (<= 4 ~counter~0)) (let ((.cse2 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse3 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse1 (select |#memory_int| 2)) (.cse4 (select |#memory_int| 1))) (and (= (select .cse1 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= .cse2 65535) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (select .cse1 5) 99) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse1 1) 99) (= (select .cse1 4) 46) (<= 1 .cse3) (<= 1 .cse2) (= (select |#valid| 1) 1) (= (select .cse1 6) 0) (<= .cse3 65535) (= 109 (select .cse1 2)) (= (select |#valid| 0) 0) (= |ULTIMATE.start_main_~v~0#1| 0) (= (select |#valid| 2) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse4 0) 48) (= ~counter~0 1) (= 49 (select .cse1 3)) (= (select .cse4 1) 0)))) (<= 1 |#StackHeapBarrier|)) (and .cse0 (<= 1 ~counter~0) (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~x~0#1| 4294967296))))) [2023-12-02 17:30:16,216 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 39 59) no Hoare annotation was computed. [2023-12-02 17:30:16,217 INFO L895 garLoopResultBuilder]: At program point L44-5(lines 44 50) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|))) (or (and (<= 2 ~counter~0) (<= ~counter~0 10) .cse0) (let ((.cse2 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse3 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse1 (select |#memory_int| 2)) (.cse4 (select |#memory_int| 1))) (and (= (select .cse1 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) .cse0 (<= .cse2 65535) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (select .cse1 5) 99) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (not (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse1 1) 99) (= (select .cse1 4) 46) (<= 1 .cse3) (<= 1 .cse2) (= (select |#valid| 1) 1) (= (select .cse1 6) 0) (<= .cse3 65535) (= 109 (select .cse1 2)) (= (select |#valid| 0) 0) (= |ULTIMATE.start_main_~v~0#1| 0) (= (select |#valid| 2) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse4 0) 48) (= ~counter~0 1) (= 49 (select .cse1 3)) (= (select .cse4 1) 0))))) [2023-12-02 17:30:16,217 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-12-02 17:30:16,217 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2023-12-02 17:30:16,217 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 52) no Hoare annotation was computed. [2023-12-02 17:30:16,217 INFO L902 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2023-12-02 17:30:16,217 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= 49 (select .cse0 3)) (= (select .cse1 1) 0))) [2023-12-02 17:30:16,217 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= 49 (select .cse0 3)) (= (select .cse1 1) 0))) [2023-12-02 17:30:16,217 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (<= ~counter~0 10) (<= 1 |#StackHeapBarrier|) (<= 3 ~counter~0)) [2023-12-02 17:30:16,217 INFO L899 garLoopResultBuilder]: For program point L53-1(lines 52 58) no Hoare annotation was computed. [2023-12-02 17:30:16,217 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (<= 2 ~counter~0) (<= ~counter~0 10) (<= 1 |#StackHeapBarrier|)) [2023-12-02 17:30:16,217 INFO L899 garLoopResultBuilder]: For program point L45-1(lines 44 50) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= ~counter~0 0) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= 49 (select .cse0 3)) (= (select .cse1 1) 0))) [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 52) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point L39-2(line 39) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point L39-3(lines 39 59) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L902 garLoopResultBuilder]: At program point L39-5(lines 39 59) the Hoare annotation is: true [2023-12-02 17:30:16,218 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-12-02 17:30:16,218 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-12-02 17:30:16,221 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:30:16,222 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:30:16,234 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][0] could not be translated [2023-12-02 17:30:16,234 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 17:30:16,235 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 17:30:16,235 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][5] could not be translated [2023-12-02 17:30:16,235 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 17:30:16,235 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 17:30:16,235 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][1] could not be translated [2023-12-02 17:30:16,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][4] could not be translated [2023-12-02 17:30:16,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 17:30:16,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][6] could not be translated [2023-12-02 17:30:16,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][2] could not be translated [2023-12-02 17:30:16,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 17:30:16,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 17:30:16,237 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 17:30:16,237 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][3] could not be translated [2023-12-02 17:30:16,237 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 17:30:16,238 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][0] could not be translated [2023-12-02 17:30:16,238 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 17:30:16,238 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 17:30:16,239 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][5] could not be translated [2023-12-02 17:30:16,239 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 17:30:16,239 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 17:30:16,239 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][1] could not be translated [2023-12-02 17:30:16,239 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][4] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][6] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][2] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][3] could not be translated [2023-12-02 17:30:16,240 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 17:30:16,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:30:16 BoogieIcfgContainer [2023-12-02 17:30:16,241 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:30:16,242 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:30:16,242 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:30:16,242 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:30:16,242 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:21:11" (3/4) ... [2023-12-02 17:30:16,244 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 17:30:16,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-12-02 17:30:16,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-12-02 17:30:16,250 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-12-02 17:30:16,250 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 17:30:16,251 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 17:30:16,251 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:30:16,251 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:30:16,324 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:30:16,324 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 17:30:16,325 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:30:16,325 INFO L158 Benchmark]: Toolchain (without parser) took 545427.21ms. Allocated memory was 165.7MB in the beginning and 503.3MB in the end (delta: 337.6MB). Free memory was 121.3MB in the beginning and 209.5MB in the end (delta: -88.2MB). Peak memory consumption was 249.8MB. Max. memory is 16.1GB. [2023-12-02 17:30:16,325 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:30:16,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.41ms. Allocated memory is still 165.7MB. Free memory was 121.3MB in the beginning and 110.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:30:16,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.30ms. Allocated memory is still 165.7MB. Free memory was 110.4MB in the beginning and 108.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:30:16,326 INFO L158 Benchmark]: Boogie Preprocessor took 23.70ms. Allocated memory is still 165.7MB. Free memory was 108.7MB in the beginning and 107.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:30:16,327 INFO L158 Benchmark]: RCFGBuilder took 342.11ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 93.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 17:30:16,327 INFO L158 Benchmark]: TraceAbstraction took 544688.99ms. Allocated memory was 165.7MB in the beginning and 503.3MB in the end (delta: 337.6MB). Free memory was 92.5MB in the beginning and 214.7MB in the end (delta: -122.3MB). Peak memory consumption was 275.0MB. Max. memory is 16.1GB. [2023-12-02 17:30:16,327 INFO L158 Benchmark]: Witness Printer took 83.03ms. Allocated memory is still 503.3MB. Free memory was 214.7MB in the beginning and 209.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:30:16,329 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.41ms. Allocated memory is still 165.7MB. Free memory was 121.3MB in the beginning and 110.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.30ms. Allocated memory is still 165.7MB. Free memory was 110.4MB in the beginning and 108.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.70ms. Allocated memory is still 165.7MB. Free memory was 108.7MB in the beginning and 107.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 342.11ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 93.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 544688.99ms. Allocated memory was 165.7MB in the beginning and 503.3MB in the end (delta: 337.6MB). Free memory was 92.5MB in the beginning and 214.7MB in the end (delta: -122.3MB). Peak memory consumption was 275.0MB. Max. memory is 16.1GB. * Witness Printer took 83.03ms. Allocated memory is still 503.3MB. Free memory was 214.7MB in the beginning and 209.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][5] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][6] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][5] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][6] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 544.6s, OverallIterations: 28, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 102.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 48.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 1595 SdHoareTripleChecker+Valid, 50.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1587 mSDsluCounter, 4333 SdHoareTripleChecker+Invalid, 49.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3479 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4696 IncrementalHoareTripleChecker+Invalid, 4938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 854 mSDtfsCounter, 4696 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4123 GetRequests, 3037 SyntacticMatches, 81 SemanticMatches, 1005 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22223 ImplicationChecksByTransitivity, 365.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=474occurred in iteration=26, InterpolantAutomatonStates: 554, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 28 MinimizatonAttempts, 611 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 223 PreInvPairs, 358 NumberOfFragments, 966 HoareAnnotationTreeSize, 223 FomulaSimplifications, 1317593 FormulaSimplificationTreeSizeReduction, 24.3s HoareSimplificationTime, 14 FomulaSimplificationsInter, 34237 FormulaSimplificationTreeSizeReductionInter, 23.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1725 NumberOfCodeBlocks, 1496 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2789 ConstructedInterpolants, 0 QuantifiedInterpolants, 6269 SizeOfPredicates, 176 NumberOfNonLiveVariables, 4398 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 45 InterpolantComputations, 13 PerfectInterpolantSequences, 2672/3778 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 14.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 129, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 246, TOOLS_POST_TIME: 3.0s, TOOLS_POST_CALL_APPLICATIONS: 104, TOOLS_POST_CALL_TIME: 1.3s, TOOLS_POST_RETURN_APPLICATIONS: 90, TOOLS_POST_RETURN_TIME: 0.9s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 436, TOOLS_QUANTIFIERELIM_TIME: 5.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 502, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 133, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 11, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 23, DOMAIN_ISSUBSETEQ_TIME: 4.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 129, DOMAIN_ISBOTTOM_TIME: 4.6s, LOOP_SUMMARIZER_APPLICATIONS: 12, LOOP_SUMMARIZER_CACHE_MISSES: 12, LOOP_SUMMARIZER_OVERALL_TIME: 9.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 9.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 23, CALL_SUMMARIZER_APPLICATIONS: 90, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 4283, DAG_COMPRESSION_RETAINED_NODES: 292, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((2 <= counter) && (counter <= 11)) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((2 <= counter) && (counter <= 12)) || ((((((((a * b) % 4294967296) == (((v * y) + (u * x)) % 4294967296)) && ((b % 4294967296) <= 65535)) && (1 <= (a % 4294967296))) && (counter == 0)) && (1 <= (b % 4294967296))) && ((a % 4294967296) <= 65535))) || (((2 <= counter) && (counter <= 10)) && ((y % 4294967296) == (x % 4294967296)))) - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((2 <= counter) && (counter <= 10)) || (((((((((((b % 4294967296) <= 65535) && (b == u)) && (b == y)) && !(((y % 4294967296) == (x % 4294967296)))) && (1 <= (a % 4294967296))) && (1 <= (b % 4294967296))) && ((a % 4294967296) <= 65535)) && (v == 0)) && (a == x)) && (counter == 1))) RESULT: Ultimate proved your program to be correct! [2023-12-02 17:30:16,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d04564d-a04b-456f-aa80-de86a603a536/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE