./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound50.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_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/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_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/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_bac25329-a87e-4a18-a8ba-5b48f154f80b/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 aefc568e9b7c922872a103ac050823e614044aea4bac2f22f2c586f3247176b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:43:07,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:43:07,129 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 19:43:07,135 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:43:07,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:43:07,161 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:43:07,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:43:07,162 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:43:07,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:43:07,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:43:07,164 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:43:07,164 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:43:07,165 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:43:07,165 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:43:07,166 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:43:07,166 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:43:07,166 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:43:07,167 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:43:07,167 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:43:07,168 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:43:07,168 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:43:07,169 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:43:07,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:43:07,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:43:07,171 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:43:07,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:43:07,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:43:07,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:43:07,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:43:07,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:43:07,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:43:07,173 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 19:43:07,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:43:07,174 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:43:07,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:43:07,174 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:43:07,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:43:07,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:43:07,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:43:07,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:43:07,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:43:07,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:43:07,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:43:07,176 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:43:07,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:43:07,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:43:07,177 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:43:07,177 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:43:07,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:43:07,177 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_bac25329-a87e-4a18-a8ba-5b48f154f80b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aefc568e9b7c922872a103ac050823e614044aea4bac2f22f2c586f3247176b4 [2023-12-02 19:43:07,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:43:07,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:43:07,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:43:07,423 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:43:07,424 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:43:07,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound50.c [2023-12-02 19:43:10,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:43:10,384 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:43:10,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound50.c [2023-12-02 19:43:10,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/data/40bac0305/fcc1faf1d9cf4acd8508925b153a3e7e/FLAGc896270a1 [2023-12-02 19:43:10,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/data/40bac0305/fcc1faf1d9cf4acd8508925b153a3e7e [2023-12-02 19:43:10,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:43:10,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:43:10,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:43:10,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:43:10,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:43:10,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c234c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10, skipping insertion in model container [2023-12-02 19:43:10,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,436 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:43:10,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:43:10,582 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:43:10,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:43:10,615 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:43:10,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10 WrapperNode [2023-12-02 19:43:10,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:43:10,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:43:10,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:43:10,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:43:10,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,652 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2023-12-02 19:43:10,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:43:10,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:43:10,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:43:10,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:43:10,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:43:10,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:43:10,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:43:10,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:43:10,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (1/1) ... [2023-12-02 19:43:10,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:43:10,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:10,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:43:10,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:43:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:43:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:43:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:43:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:43:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 19:43:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 19:43:10,809 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:43:10,811 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:43:11,074 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:43:11,115 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:43:11,115 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:43:11,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:43:11 BoogieIcfgContainer [2023-12-02 19:43:11,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:43:11,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:43:11,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:43:11,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:43:11,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:43:10" (1/3) ... [2023-12-02 19:43:11,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbd376c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:43:11, skipping insertion in model container [2023-12-02 19:43:11,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:43:10" (2/3) ... [2023-12-02 19:43:11,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbd376c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:43:11, skipping insertion in model container [2023-12-02 19:43:11,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:43:11" (3/3) ... [2023-12-02 19:43:11,126 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound50.c [2023-12-02 19:43:11,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:43:11,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-12-02 19:43:11,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:43:11,204 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;@65fdeff8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:43:11,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-12-02 19:43:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 66 states have internal predecessors, (73), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 19:43:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 19:43:11,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:11,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 19:43:11,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:11,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash 178234, now seen corresponding path program 1 times [2023-12-02 19:43:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:11,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589635757] [2023-12-02 19:43:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:11,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:43:11,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589635757] [2023-12-02 19:43:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589635757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:11,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420722186] [2023-12-02 19:43:11,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:11,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:43:11,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:43:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:43:11,489 INFO L87 Difference]: Start difference. First operand has 75 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 66 states have internal predecessors, (73), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 19:43:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:11,580 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2023-12-02 19:43:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:43:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 19:43:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:11,591 INFO L225 Difference]: With dead ends: 133 [2023-12-02 19:43:11,592 INFO L226 Difference]: Without dead ends: 75 [2023-12-02 19:43:11,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 19:43:11,599 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:11,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 230 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:43:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-02 19:43:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-02 19:43:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 68 states have internal predecessors, (73), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:43:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2023-12-02 19:43:11,642 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 3 [2023-12-02 19:43:11,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:11,642 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2023-12-02 19:43:11,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 19:43:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2023-12-02 19:43:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:43:11,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:11,644 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:43:11,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:11,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1601283050, now seen corresponding path program 1 times [2023-12-02 19:43:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:11,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22507047] [2023-12-02 19:43:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:11,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:11,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1871056120] [2023-12-02 19:43:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:11,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:11,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:11,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:11,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:43:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:11,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:11,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:43:11,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:11,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:11,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22507047] [2023-12-02 19:43:11,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:11,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871056120] [2023-12-02 19:43:11,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871056120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:11,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:11,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:11,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40972452] [2023-12-02 19:43:11,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:11,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:11,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:11,825 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:43:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:11,917 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2023-12-02 19:43:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:11,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2023-12-02 19:43:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:11,920 INFO L225 Difference]: With dead ends: 111 [2023-12-02 19:43:11,920 INFO L226 Difference]: Without dead ends: 107 [2023-12-02 19:43:11,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 19:43:11,922 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 47 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:11,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 84 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-02 19:43:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2023-12-02 19:43:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 80 states have internal predecessors, (96), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 19:43:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2023-12-02 19:43:11,938 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 12 [2023-12-02 19:43:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:11,939 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2023-12-02 19:43:11,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:43:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2023-12-02 19:43:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 19:43:11,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:11,940 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:11,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:43:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:12,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:12,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1899833061, now seen corresponding path program 1 times [2023-12-02 19:43:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:12,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782367715] [2023-12-02 19:43:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:12,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:12,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855030502] [2023-12-02 19:43:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:12,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:12,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:12,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:12,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:43:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:12,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:12,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:43:12,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:12,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:12,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782367715] [2023-12-02 19:43:12,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:12,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855030502] [2023-12-02 19:43:12,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855030502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:12,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:12,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:12,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334859998] [2023-12-02 19:43:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:12,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:12,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:12,274 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:43:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:12,372 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2023-12-02 19:43:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-12-02 19:43:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:12,375 INFO L225 Difference]: With dead ends: 164 [2023-12-02 19:43:12,375 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 19:43:12,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 19:43:12,377 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 50 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:12,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 123 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 19:43:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 137. [2023-12-02 19:43:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.7395833333333333) internal successors, (167), 121 states have internal predecessors, (167), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:43:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 195 transitions. [2023-12-02 19:43:12,398 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 195 transitions. Word has length 13 [2023-12-02 19:43:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:12,399 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 195 transitions. [2023-12-02 19:43:12,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:43:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 195 transitions. [2023-12-02 19:43:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 19:43:12,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:12,400 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:12,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:43:12,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:12,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:12,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash 892086673, now seen corresponding path program 1 times [2023-12-02 19:43:12,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:12,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096410951] [2023-12-02 19:43:12,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:12,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:12,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:12,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171298854] [2023-12-02 19:43:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:12,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:12,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:12,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:43:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:12,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:12,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:12,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:12,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:12,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096410951] [2023-12-02 19:43:12,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:12,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171298854] [2023-12-02 19:43:12,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171298854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:12,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:12,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:12,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235421879] [2023-12-02 19:43:12,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:12,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:12,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:12,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:12,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:12,692 INFO L87 Difference]: Start difference. First operand 137 states and 195 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:12,744 INFO L93 Difference]: Finished difference Result 153 states and 202 transitions. [2023-12-02 19:43:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-12-02 19:43:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:12,746 INFO L225 Difference]: With dead ends: 153 [2023-12-02 19:43:12,747 INFO L226 Difference]: Without dead ends: 151 [2023-12-02 19:43:12,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 19:43:12,748 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:12,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 95 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:43:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-02 19:43:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2023-12-02 19:43:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 96 states have (on average 1.6979166666666667) internal successors, (163), 120 states have internal predecessors, (163), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:43:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 191 transitions. [2023-12-02 19:43:12,767 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 191 transitions. Word has length 18 [2023-12-02 19:43:12,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:12,768 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 191 transitions. [2023-12-02 19:43:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 191 transitions. [2023-12-02 19:43:12,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:43:12,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:12,769 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:12,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:43:12,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:12,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:12,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1884881650, now seen corresponding path program 1 times [2023-12-02 19:43:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606394415] [2023-12-02 19:43:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:12,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:12,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749591750] [2023-12-02 19:43:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:12,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:12,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:12,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:12,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:43:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:13,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:43:13,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:13,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:13,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606394415] [2023-12-02 19:43:13,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749591750] [2023-12-02 19:43:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749591750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:13,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:13,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:43:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893413186] [2023-12-02 19:43:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:43:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:43:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:43:13,086 INFO L87 Difference]: Start difference. First operand 136 states and 191 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:13,154 INFO L93 Difference]: Finished difference Result 136 states and 191 transitions. [2023-12-02 19:43:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:43:13,155 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-12-02 19:43:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:13,156 INFO L225 Difference]: With dead ends: 136 [2023-12-02 19:43:13,156 INFO L226 Difference]: Without dead ends: 134 [2023-12-02 19:43:13,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 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 19:43:13,158 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 67 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:13,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 180 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:43:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-12-02 19:43:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-12-02 19:43:13,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 96 states have (on average 1.6458333333333333) internal successors, (158), 118 states have internal predecessors, (158), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:43:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2023-12-02 19:43:13,172 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 19 [2023-12-02 19:43:13,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:13,173 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2023-12-02 19:43:13,173 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:13,173 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2023-12-02 19:43:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:43:13,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:13,174 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:13,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 19:43:13,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:13,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:13,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1884883156, now seen corresponding path program 1 times [2023-12-02 19:43:13,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:13,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588938979] [2023-12-02 19:43:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:13,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:13,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:13,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590125177] [2023-12-02 19:43:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:13,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:13,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:13,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:13,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:43:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:13,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:43:13,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:13,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:13,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588938979] [2023-12-02 19:43:13,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590125177] [2023-12-02 19:43:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590125177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:13,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:13,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778978787] [2023-12-02 19:43:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:13,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:13,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:13,460 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:13,533 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2023-12-02 19:43:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:13,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2023-12-02 19:43:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:13,535 INFO L225 Difference]: With dead ends: 155 [2023-12-02 19:43:13,535 INFO L226 Difference]: Without dead ends: 153 [2023-12-02 19:43:13,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 19:43:13,536 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:13,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 104 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-02 19:43:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2023-12-02 19:43:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 96 states have (on average 1.6145833333333333) internal successors, (155), 118 states have internal predecessors, (155), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:43:13,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2023-12-02 19:43:13,549 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 19 [2023-12-02 19:43:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:13,550 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2023-12-02 19:43:13,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2023-12-02 19:43:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 19:43:13,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:13,551 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:13,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 19:43:13,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:13,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:13,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1698210910, now seen corresponding path program 1 times [2023-12-02 19:43:13,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:13,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372606497] [2023-12-02 19:43:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:13,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:13,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611013288] [2023-12-02 19:43:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:13,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:13,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:13,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 19:43:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:13,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:43:13,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:13,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:13,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372606497] [2023-12-02 19:43:13,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:13,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611013288] [2023-12-02 19:43:13,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611013288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:13,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:13,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:43:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235500887] [2023-12-02 19:43:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:13,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:43:13,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:43:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:43:13,852 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:13,932 INFO L93 Difference]: Finished difference Result 149 states and 195 transitions. [2023-12-02 19:43:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:43:13,932 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-12-02 19:43:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:13,934 INFO L225 Difference]: With dead ends: 149 [2023-12-02 19:43:13,934 INFO L226 Difference]: Without dead ends: 140 [2023-12-02 19:43:13,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 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 19:43:13,935 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 14 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:13,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 314 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:43:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-02 19:43:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2023-12-02 19:43:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 97 states have (on average 1.5876288659793814) internal successors, (154), 119 states have internal predecessors, (154), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 19:43:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2023-12-02 19:43:13,948 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 20 [2023-12-02 19:43:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:13,948 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2023-12-02 19:43:13,948 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:13,949 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2023-12-02 19:43:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 19:43:13,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:13,949 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:13,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 19:43:14,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 19:43:14,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:14,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:14,160 INFO L85 PathProgramCache]: Analyzing trace with hash 106890820, now seen corresponding path program 1 times [2023-12-02 19:43:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:14,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889473516] [2023-12-02 19:43:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:14,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:14,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311515962] [2023-12-02 19:43:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:14,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:14,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:14,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:14,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 19:43:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:14,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:14,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:14,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:14,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:14,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889473516] [2023-12-02 19:43:14,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311515962] [2023-12-02 19:43:14,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311515962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:14,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:14,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245603522] [2023-12-02 19:43:14,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:14,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:14,306 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:14,384 INFO L93 Difference]: Finished difference Result 202 states and 270 transitions. [2023-12-02 19:43:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:14,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-12-02 19:43:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:14,388 INFO L225 Difference]: With dead ends: 202 [2023-12-02 19:43:14,388 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 19:43:14,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 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 19:43:14,390 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 49 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:14,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:14,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 19:43:14,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 172. [2023-12-02 19:43:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 129 states have (on average 1.6046511627906976) internal successors, (207), 151 states have internal predecessors, (207), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:43:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 243 transitions. [2023-12-02 19:43:14,407 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 243 transitions. Word has length 22 [2023-12-02 19:43:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:14,407 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 243 transitions. [2023-12-02 19:43:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 243 transitions. [2023-12-02 19:43:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 19:43:14,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:14,409 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:14,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 19:43:14,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:14,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:14,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash -981351783, now seen corresponding path program 1 times [2023-12-02 19:43:14,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:14,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865033821] [2023-12-02 19:43:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:14,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:14,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:14,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846236397] [2023-12-02 19:43:14,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:14,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:14,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:14,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:14,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 19:43:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:14,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:14,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:14,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:14,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865033821] [2023-12-02 19:43:14,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846236397] [2023-12-02 19:43:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846236397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:14,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857989305] [2023-12-02 19:43:14,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:14,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:14,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:14,758 INFO L87 Difference]: Start difference. First operand 172 states and 243 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:14,831 INFO L93 Difference]: Finished difference Result 202 states and 266 transitions. [2023-12-02 19:43:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:14,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-12-02 19:43:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:14,834 INFO L225 Difference]: With dead ends: 202 [2023-12-02 19:43:14,834 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 19:43:14,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 19:43:14,835 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 47 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:14,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 78 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 19:43:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 172. [2023-12-02 19:43:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 129 states have (on average 1.573643410852713) internal successors, (203), 151 states have internal predecessors, (203), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:43:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 239 transitions. [2023-12-02 19:43:14,848 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 239 transitions. Word has length 23 [2023-12-02 19:43:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:14,849 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 239 transitions. [2023-12-02 19:43:14,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 239 transitions. [2023-12-02 19:43:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 19:43:14,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:14,850 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:14,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 19:43:15,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:15,051 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:15,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:15,052 INFO L85 PathProgramCache]: Analyzing trace with hash -357134106, now seen corresponding path program 1 times [2023-12-02 19:43:15,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:15,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883730219] [2023-12-02 19:43:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:15,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:15,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:15,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015456275] [2023-12-02 19:43:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:15,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:15,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:15,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:15,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 19:43:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:15,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:15,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:15,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:15,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883730219] [2023-12-02 19:43:15,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:15,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015456275] [2023-12-02 19:43:15,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015456275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:15,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:15,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:43:15,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974728415] [2023-12-02 19:43:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:15,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:43:15,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:43:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:43:15,162 INFO L87 Difference]: Start difference. First operand 172 states and 239 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:15,237 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2023-12-02 19:43:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:15,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-12-02 19:43:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:15,240 INFO L225 Difference]: With dead ends: 195 [2023-12-02 19:43:15,240 INFO L226 Difference]: Without dead ends: 194 [2023-12-02 19:43:15,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 19:43:15,241 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 93 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:15,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 87 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-02 19:43:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 172. [2023-12-02 19:43:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 129 states have (on average 1.5426356589147288) internal successors, (199), 151 states have internal predecessors, (199), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 19:43:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 235 transitions. [2023-12-02 19:43:15,258 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 235 transitions. Word has length 24 [2023-12-02 19:43:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:15,259 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 235 transitions. [2023-12-02 19:43:15,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 235 transitions. [2023-12-02 19:43:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 19:43:15,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:15,260 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:15,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 19:43:15,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:43:15,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:15,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:15,464 INFO L85 PathProgramCache]: Analyzing trace with hash -203834760, now seen corresponding path program 1 times [2023-12-02 19:43:15,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:15,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640477694] [2023-12-02 19:43:15,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:15,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:15,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564860190] [2023-12-02 19:43:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:15,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:15,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:15,475 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:15,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 19:43:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:15,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:43:15,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:15,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:15,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640477694] [2023-12-02 19:43:15,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564860190] [2023-12-02 19:43:15,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564860190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:43:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225607066] [2023-12-02 19:43:15,654 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 19:43:15,654 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:15,657 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:15,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:15,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:18,237 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 19:43:18,250 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:26,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4149#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387903)) (= (mod |ULTIMATE.start_main_~p~0#1| 2) 0) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) 4611686018427387903)) (= (+ |ULTIMATE.start_main_~d~0#1| (* (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 2)) 0) (<= (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) 4611686018427387904) (<= 0 (+ (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= ~counter~0 |ULTIMATE.start_main_#t~post6#1|) (<= (* (div (* (- 1) |ULTIMATE.start_main_~p~0#1|) 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387904))' at error location [2023-12-02 19:43:26,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:26,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:43:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-12-02 19:43:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483816097] [2023-12-02 19:43:26,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:26,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:43:26,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:26,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:43:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=547, Unknown=2, NotChecked=0, Total=650 [2023-12-02 19:43:26,530 INFO L87 Difference]: Start difference. First operand 172 states and 235 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 19:43:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:26,734 INFO L93 Difference]: Finished difference Result 303 states and 400 transitions. [2023-12-02 19:43:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 19:43:26,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 24 [2023-12-02 19:43:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:26,736 INFO L225 Difference]: With dead ends: 303 [2023-12-02 19:43:26,736 INFO L226 Difference]: Without dead ends: 221 [2023-12-02 19:43:26,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=174, Invalid=880, Unknown=2, NotChecked=0, Total=1056 [2023-12-02 19:43:26,739 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 71 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:26,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 351 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-02 19:43:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2023-12-02 19:43:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 156 states have (on average 1.5064102564102564) internal successors, (235), 178 states have internal predecessors, (235), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 19:43:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 283 transitions. [2023-12-02 19:43:26,762 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 283 transitions. Word has length 24 [2023-12-02 19:43:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:26,762 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 283 transitions. [2023-12-02 19:43:26,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 19:43:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 283 transitions. [2023-12-02 19:43:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 19:43:26,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:26,763 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:26,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 19:43:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 19:43:26,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:26,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1813744699, now seen corresponding path program 1 times [2023-12-02 19:43:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869395175] [2023-12-02 19:43:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:26,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:26,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478425467] [2023-12-02 19:43:26,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:26,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:26,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:26,977 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:26,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 19:43:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:27,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:43:27,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 19:43:27,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:27,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:27,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869395175] [2023-12-02 19:43:27,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:27,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478425467] [2023-12-02 19:43:27,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478425467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:27,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:27,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:27,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532887897] [2023-12-02 19:43:27,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:27,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:27,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:27,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:27,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:27,081 INFO L87 Difference]: Start difference. First operand 207 states and 283 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:27,146 INFO L93 Difference]: Finished difference Result 229 states and 298 transitions. [2023-12-02 19:43:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-12-02 19:43:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:27,148 INFO L225 Difference]: With dead ends: 229 [2023-12-02 19:43:27,149 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 19:43:27,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 19:43:27,150 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:27,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 83 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:43:27,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 19:43:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 210. [2023-12-02 19:43:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 159 states have (on average 1.471698113207547) internal successors, (234), 181 states have internal predecessors, (234), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 19:43:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 282 transitions. [2023-12-02 19:43:27,169 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 282 transitions. Word has length 25 [2023-12-02 19:43:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:27,170 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 282 transitions. [2023-12-02 19:43:27,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 19:43:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 282 transitions. [2023-12-02 19:43:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 19:43:27,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:27,171 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:27,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-02 19:43:27,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 19:43:27,374 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:27,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1351566819, now seen corresponding path program 1 times [2023-12-02 19:43:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592557147] [2023-12-02 19:43:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:27,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:27,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586722227] [2023-12-02 19:43:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:27,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:27,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:27,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:27,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 19:43:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:27,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:43:27,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:43:27,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:27,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:27,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592557147] [2023-12-02 19:43:27,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:27,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586722227] [2023-12-02 19:43:27,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586722227] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:43:27,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109298361] [2023-12-02 19:43:27,624 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 19:43:27,624 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:27,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:27,624 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:27,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:28,966 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 19:43:28,973 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:31,501 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5527#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 19:43:31,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:31,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:43:31,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-12-02 19:43:31,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916242714] [2023-12-02 19:43:31,502 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:31,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:43:31,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:31,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:43:31,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-12-02 19:43:31,503 INFO L87 Difference]: Start difference. First operand 210 states and 282 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 19:43:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:31,737 INFO L93 Difference]: Finished difference Result 301 states and 392 transitions. [2023-12-02 19:43:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:43:31,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2023-12-02 19:43:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:31,739 INFO L225 Difference]: With dead ends: 301 [2023-12-02 19:43:31,740 INFO L226 Difference]: Without dead ends: 297 [2023-12-02 19:43:31,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-12-02 19:43:31,741 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 70 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:31,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 132 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:43:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-02 19:43:31,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 266. [2023-12-02 19:43:31,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 209 states have (on average 1.4832535885167464) internal successors, (310), 231 states have internal predecessors, (310), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 19:43:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 370 transitions. [2023-12-02 19:43:31,763 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 370 transitions. Word has length 33 [2023-12-02 19:43:31,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:31,764 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 370 transitions. [2023-12-02 19:43:31,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 19:43:31,764 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 370 transitions. [2023-12-02 19:43:31,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 19:43:31,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:31,765 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:31,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 19:43:31,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:31,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:31,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1643152196, now seen corresponding path program 1 times [2023-12-02 19:43:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:31,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683350793] [2023-12-02 19:43:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:31,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:31,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:31,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949077670] [2023-12-02 19:43:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:31,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:31,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:31,982 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:31,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 19:43:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:32,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:32,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:43:32,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:32,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683350793] [2023-12-02 19:43:32,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949077670] [2023-12-02 19:43:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949077670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:32,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:32,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:43:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134161429] [2023-12-02 19:43:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:32,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:43:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:43:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:43:32,075 INFO L87 Difference]: Start difference. First operand 266 states and 370 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:32,375 INFO L93 Difference]: Finished difference Result 289 states and 383 transitions. [2023-12-02 19:43:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:43:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2023-12-02 19:43:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:32,377 INFO L225 Difference]: With dead ends: 289 [2023-12-02 19:43:32,377 INFO L226 Difference]: Without dead ends: 284 [2023-12-02 19:43:32,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 19:43:32,378 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 80 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:32,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 123 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:43:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-02 19:43:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 263. [2023-12-02 19:43:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 206 states have (on average 1.4368932038834952) internal successors, (296), 228 states have internal predecessors, (296), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 19:43:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 356 transitions. [2023-12-02 19:43:32,400 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 356 transitions. Word has length 37 [2023-12-02 19:43:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:32,400 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 356 transitions. [2023-12-02 19:43:32,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 356 transitions. [2023-12-02 19:43:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 19:43:32,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:32,401 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 19:43:32,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 19:43:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 19:43:32,607 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:32,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:32,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2121567918, now seen corresponding path program 1 times [2023-12-02 19:43:32,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381421805] [2023-12-02 19:43:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:32,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:32,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687127846] [2023-12-02 19:43:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:32,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:32,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:32,616 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:32,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 19:43:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:32,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:43:32,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 19:43:32,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 19:43:32,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381421805] [2023-12-02 19:43:32,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687127846] [2023-12-02 19:43:32,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687127846] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:43:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [75003804] [2023-12-02 19:43:32,750 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 19:43:32,750 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:32,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:32,751 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:32,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:34,025 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 19:43:34,031 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:38,666 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7202#(and (<= 1 |#StackHeapBarrier|) (<= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~d~0#1|))' at error location [2023-12-02 19:43:38,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:38,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:43:38,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 19:43:38,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337174611] [2023-12-02 19:43:38,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:38,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:43:38,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:38,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:43:38,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-12-02 19:43:38,668 INFO L87 Difference]: Start difference. First operand 263 states and 356 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 19:43:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:38,823 INFO L93 Difference]: Finished difference Result 344 states and 472 transitions. [2023-12-02 19:43:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:43:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 39 [2023-12-02 19:43:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:38,826 INFO L225 Difference]: With dead ends: 344 [2023-12-02 19:43:38,826 INFO L226 Difference]: Without dead ends: 342 [2023-12-02 19:43:38,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-12-02 19:43:38,828 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 247 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:38,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 149 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-02 19:43:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 208. [2023-12-02 19:43:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 159 states have (on average 1.3836477987421383) internal successors, (220), 179 states have internal predecessors, (220), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 19:43:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 268 transitions. [2023-12-02 19:43:38,844 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 268 transitions. Word has length 39 [2023-12-02 19:43:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:38,844 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 268 transitions. [2023-12-02 19:43:38,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 19:43:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 268 transitions. [2023-12-02 19:43:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 19:43:38,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:38,846 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:38,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 19:43:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 19:43:39,047 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:39,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1344142620, now seen corresponding path program 1 times [2023-12-02 19:43:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122274841] [2023-12-02 19:43:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:39,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728399740] [2023-12-02 19:43:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:39,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:39,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:39,058 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:39,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 19:43:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:39,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:43:39,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 19:43:39,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 19:43:39,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122274841] [2023-12-02 19:43:39,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728399740] [2023-12-02 19:43:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728399740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:43:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1097036353] [2023-12-02 19:43:39,226 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 19:43:39,226 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:39,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:39,226 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:39,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:40,376 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 19:43:40,382 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:42,823 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8119#(and (<= 1 |#StackHeapBarrier|) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (= |ULTIMATE.start_main_~q~0#1| 0) (= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~d~0#1|) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~d~0#1|))' at error location [2023-12-02 19:43:42,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:42,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:43:42,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-12-02 19:43:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504339842] [2023-12-02 19:43:42,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:43:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:43:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2023-12-02 19:43:42,825 INFO L87 Difference]: Start difference. First operand 208 states and 268 transitions. Second operand has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 19:43:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:43,167 INFO L93 Difference]: Finished difference Result 254 states and 319 transitions. [2023-12-02 19:43:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 19:43:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 40 [2023-12-02 19:43:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:43,170 INFO L225 Difference]: With dead ends: 254 [2023-12-02 19:43:43,170 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 19:43:43,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=289, Invalid=1781, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 19:43:43,171 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 88 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:43,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 654 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:43,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 19:43:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 231. [2023-12-02 19:43:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 177 states have (on average 1.384180790960452) internal successors, (245), 197 states have internal predecessors, (245), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 19:43:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 299 transitions. [2023-12-02 19:43:43,192 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 299 transitions. Word has length 40 [2023-12-02 19:43:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:43,192 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 299 transitions. [2023-12-02 19:43:43,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 19:43:43,193 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 299 transitions. [2023-12-02 19:43:43,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 19:43:43,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:43,193 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:43,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 19:43:43,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 19:43:43,394 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:43,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:43,394 INFO L85 PathProgramCache]: Analyzing trace with hash -369237451, now seen corresponding path program 1 times [2023-12-02 19:43:43,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:43,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486992695] [2023-12-02 19:43:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:43,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:43,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:43,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804435289] [2023-12-02 19:43:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:43,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:43,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:43,402 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:43,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 19:43:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:43,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:43:43,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:43:43,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:43,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:43,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486992695] [2023-12-02 19:43:43,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:43,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804435289] [2023-12-02 19:43:43,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804435289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:43,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:43:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789789341] [2023-12-02 19:43:43,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:43,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:43,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:43,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:43,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:43,453 INFO L87 Difference]: Start difference. First operand 231 states and 299 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:43,495 INFO L93 Difference]: Finished difference Result 231 states and 299 transitions. [2023-12-02 19:43:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 40 [2023-12-02 19:43:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:43,497 INFO L225 Difference]: With dead ends: 231 [2023-12-02 19:43:43,497 INFO L226 Difference]: Without dead ends: 230 [2023-12-02 19:43:43,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 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 19:43:43,498 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:43,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:43:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-02 19:43:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2023-12-02 19:43:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.3672316384180792) internal successors, (242), 196 states have internal predecessors, (242), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 19:43:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2023-12-02 19:43:43,518 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 40 [2023-12-02 19:43:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:43,518 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2023-12-02 19:43:43,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2023-12-02 19:43:43,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 19:43:43,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:43,519 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:43,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 19:43:43,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 19:43:43,720 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:43,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1438541030, now seen corresponding path program 1 times [2023-12-02 19:43:43,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:43,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767605555] [2023-12-02 19:43:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:43,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:43,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547414536] [2023-12-02 19:43:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:43,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:43,730 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:43,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 19:43:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:43,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:43:43,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 19:43:43,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:43,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:43,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767605555] [2023-12-02 19:43:43,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:43,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547414536] [2023-12-02 19:43:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547414536] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:43:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143224059] [2023-12-02 19:43:43,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:43,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:43:43,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:43:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:43:43,800 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:43,847 INFO L93 Difference]: Finished difference Result 327 states and 408 transitions. [2023-12-02 19:43:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:43:43,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2023-12-02 19:43:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:43,850 INFO L225 Difference]: With dead ends: 327 [2023-12-02 19:43:43,850 INFO L226 Difference]: Without dead ends: 238 [2023-12-02 19:43:43,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 19:43:43,851 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:43,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:43:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-02 19:43:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 230. [2023-12-02 19:43:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.3615819209039548) internal successors, (241), 196 states have internal predecessors, (241), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 19:43:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 295 transitions. [2023-12-02 19:43:43,873 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 295 transitions. Word has length 41 [2023-12-02 19:43:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:43,873 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 295 transitions. [2023-12-02 19:43:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 295 transitions. [2023-12-02 19:43:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 19:43:43,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:43,874 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-12-02 19:43:43,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 19:43:44,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 19:43:44,075 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:44,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:44,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1083573791, now seen corresponding path program 2 times [2023-12-02 19:43:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284362393] [2023-12-02 19:43:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:44,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:44,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:44,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124024443] [2023-12-02 19:43:44,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:43:44,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:44,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:44,086 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:44,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 19:43:44,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 19:43:44,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:43:44,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:43:44,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:43:44,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:44,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284362393] [2023-12-02 19:43:44,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124024443] [2023-12-02 19:43:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124024443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:43:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [312422172] [2023-12-02 19:43:44,363 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 19:43:44,363 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:44,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:44,364 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:44,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:45,492 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 19:43:45,498 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:43:47,802 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10425#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 19:43:47,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:43:47,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:43:47,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-12-02 19:43:47,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909591884] [2023-12-02 19:43:47,803 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:43:47,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:43:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:47,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:43:47,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-12-02 19:43:47,804 INFO L87 Difference]: Start difference. First operand 230 states and 295 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 19:43:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:48,042 INFO L93 Difference]: Finished difference Result 365 states and 462 transitions. [2023-12-02 19:43:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:43:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 53 [2023-12-02 19:43:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:48,044 INFO L225 Difference]: With dead ends: 365 [2023-12-02 19:43:48,044 INFO L226 Difference]: Without dead ends: 361 [2023-12-02 19:43:48,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-12-02 19:43:48,045 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 162 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:48,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 145 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:43:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-02 19:43:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 246. [2023-12-02 19:43:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 191 states have (on average 1.324607329842932) internal successors, (253), 210 states have internal predecessors, (253), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 19:43:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 311 transitions. [2023-12-02 19:43:48,070 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 311 transitions. Word has length 53 [2023-12-02 19:43:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:48,071 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 311 transitions. [2023-12-02 19:43:48,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 19:43:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 311 transitions. [2023-12-02 19:43:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 19:43:48,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:48,072 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:48,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 19:43:48,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:48,272 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:48,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:48,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1075591908, now seen corresponding path program 1 times [2023-12-02 19:43:48,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:48,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886986959] [2023-12-02 19:43:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:48,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:48,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052255350] [2023-12-02 19:43:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:48,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:48,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:48,284 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:48,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 19:43:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:48,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:43:48,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:43:48,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:48,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886986959] [2023-12-02 19:43:48,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052255350] [2023-12-02 19:43:48,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052255350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:48,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:48,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:43:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119317803] [2023-12-02 19:43:48,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:48,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:43:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:43:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:43:48,502 INFO L87 Difference]: Start difference. First operand 246 states and 311 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:43:48,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:48,607 INFO L93 Difference]: Finished difference Result 340 states and 433 transitions. [2023-12-02 19:43:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:43:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-12-02 19:43:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:48,609 INFO L225 Difference]: With dead ends: 340 [2023-12-02 19:43:48,609 INFO L226 Difference]: Without dead ends: 338 [2023-12-02 19:43:48,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 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 19:43:48,610 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:48,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 133 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-02 19:43:48,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 314. [2023-12-02 19:43:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 251 states have (on average 1.3585657370517927) internal successors, (341), 270 states have internal predecessors, (341), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 19:43:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 415 transitions. [2023-12-02 19:43:48,640 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 415 transitions. Word has length 61 [2023-12-02 19:43:48,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:48,640 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 415 transitions. [2023-12-02 19:43:48,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:43:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 415 transitions. [2023-12-02 19:43:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 19:43:48,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:48,642 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:48,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 19:43:48,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:48,842 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:48,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:48,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1016389095, now seen corresponding path program 1 times [2023-12-02 19:43:48,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:48,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654330722] [2023-12-02 19:43:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:48,850 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:48,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224058607] [2023-12-02 19:43:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:48,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:48,852 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:48,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 19:43:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:48,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:43:48,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 19:43:49,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:49,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654330722] [2023-12-02 19:43:49,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:49,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224058607] [2023-12-02 19:43:49,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224058607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:49,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:49,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:43:49,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093657061] [2023-12-02 19:43:49,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:49,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:43:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:49,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:43:49,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:43:49,055 INFO L87 Difference]: Start difference. First operand 314 states and 415 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:49,250 INFO L93 Difference]: Finished difference Result 332 states and 429 transitions. [2023-12-02 19:43:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:43:49,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2023-12-02 19:43:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:49,252 INFO L225 Difference]: With dead ends: 332 [2023-12-02 19:43:49,252 INFO L226 Difference]: Without dead ends: 330 [2023-12-02 19:43:49,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:43:49,253 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 61 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:49,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 125 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:43:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-02 19:43:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 320. [2023-12-02 19:43:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 257 states have (on average 1.33852140077821) internal successors, (344), 276 states have internal predecessors, (344), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 19:43:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 418 transitions. [2023-12-02 19:43:49,278 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 418 transitions. Word has length 62 [2023-12-02 19:43:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:49,278 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 418 transitions. [2023-12-02 19:43:49,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 418 transitions. [2023-12-02 19:43:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 19:43:49,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:49,279 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:49,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 19:43:49,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:49,480 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:49,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1443290746, now seen corresponding path program 1 times [2023-12-02 19:43:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:49,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992326429] [2023-12-02 19:43:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:49,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:49,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949433972] [2023-12-02 19:43:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:49,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:49,489 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:49,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 19:43:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:49,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:43:49,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 19:43:49,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:43:49,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992326429] [2023-12-02 19:43:49,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949433972] [2023-12-02 19:43:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949433972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:43:49,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:43:49,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:43:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139776796] [2023-12-02 19:43:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:43:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:43:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:43:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:43:49,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:43:49,662 INFO L87 Difference]: Start difference. First operand 320 states and 418 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:43:49,824 INFO L93 Difference]: Finished difference Result 329 states and 422 transitions. [2023-12-02 19:43:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:43:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2023-12-02 19:43:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:43:49,827 INFO L225 Difference]: With dead ends: 329 [2023-12-02 19:43:49,827 INFO L226 Difference]: Without dead ends: 327 [2023-12-02 19:43:49,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 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 19:43:49,828 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 45 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:43:49,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 84 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:43:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-02 19:43:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 322. [2023-12-02 19:43:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 259 states have (on average 1.3166023166023166) internal successors, (341), 278 states have internal predecessors, (341), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 19:43:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 415 transitions. [2023-12-02 19:43:49,854 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 415 transitions. Word has length 63 [2023-12-02 19:43:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:43:49,854 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 415 transitions. [2023-12-02 19:43:49,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:43:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 415 transitions. [2023-12-02 19:43:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 19:43:49,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:43:49,856 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:43:49,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-02 19:43:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:50,058 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:43:50,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:43:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash -490027172, now seen corresponding path program 1 times [2023-12-02 19:43:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:43:50,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73173363] [2023-12-02 19:43:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:43:50,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:43:50,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903285085] [2023-12-02 19:43:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:43:50,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:43:50,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:43:50,067 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:43:50,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 19:43:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:43:50,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:43:50,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:43:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 19:43:50,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:43:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:43:50,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:43:50,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73173363] [2023-12-02 19:43:50,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:43:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903285085] [2023-12-02 19:43:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903285085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:43:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1092840507] [2023-12-02 19:43:50,319 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 19:43:50,319 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:43:50,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:43:50,320 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:43:50,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:43:52,271 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:43:52,405 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:43:53,453 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:43:53,463 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:44:01,561 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14475#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0) (exists ((v_~counter~0_56 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (= ~counter~0 (+ v_~counter~0_56 1)) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= v_~counter~0_56 50) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))) (<= 51 ~counter~0))' at error location [2023-12-02 19:44:01,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:44:01,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:44:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-02 19:44:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051230372] [2023-12-02 19:44:01,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:44:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 19:44:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:01,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 19:44:01,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=2291, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 19:44:01,564 INFO L87 Difference]: Start difference. First operand 322 states and 415 transitions. Second operand has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-02 19:44:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:02,042 INFO L93 Difference]: Finished difference Result 700 states and 891 transitions. [2023-12-02 19:44:02,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 19:44:02,042 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 68 [2023-12-02 19:44:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:02,045 INFO L225 Difference]: With dead ends: 700 [2023-12-02 19:44:02,045 INFO L226 Difference]: Without dead ends: 489 [2023-12-02 19:44:02,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=473, Invalid=4083, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 19:44:02,048 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 170 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:02,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 529 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:44:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-02 19:44:02,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 441. [2023-12-02 19:44:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 366 states have (on average 1.2978142076502732) internal successors, (475), 385 states have internal predecessors, (475), 47 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-02 19:44:02,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 569 transitions. [2023-12-02 19:44:02,074 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 569 transitions. Word has length 68 [2023-12-02 19:44:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:02,075 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 569 transitions. [2023-12-02 19:44:02,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.055555555555555) internal successors, (91), 18 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-02 19:44:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 569 transitions. [2023-12-02 19:44:02,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 19:44:02,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:02,076 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:02,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 19:44:02,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:44:02,276 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:44:02,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash -490027154, now seen corresponding path program 1 times [2023-12-02 19:44:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:02,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14646742] [2023-12-02 19:44:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:02,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:44:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935732626] [2023-12-02 19:44:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:02,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:44:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:44:02,284 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:44:02,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 19:44:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:02,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:44:02,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:44:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:44:02,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:44:03,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14646742] [2023-12-02 19:44:03,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:44:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935732626] [2023-12-02 19:44:03,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935732626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:44:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [861965488] [2023-12-02 19:44:03,261 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:44:03,261 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:44:03,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:44:03,262 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:44:03,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:44:07,062 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:44:07,173 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:44:08,153 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:44:08,160 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:44:44,197 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16133#(and (<= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775809) 0) (<= ~counter~0 50) (exists ((v_~counter~0_66 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (= ~counter~0 (+ v_~counter~0_66 1)) (<= 2 v_~counter~0_66) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))))' at error location [2023-12-02 19:44:44,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:44:44,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:44:44,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 19:44:44,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322519759] [2023-12-02 19:44:44,197 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:44:44,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:44:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:44:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1389, Unknown=4, NotChecked=0, Total=1640 [2023-12-02 19:44:44,198 INFO L87 Difference]: Start difference. First operand 441 states and 569 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:44:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:44,423 INFO L93 Difference]: Finished difference Result 521 states and 652 transitions. [2023-12-02 19:44:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:44:44,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-12-02 19:44:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:44,425 INFO L225 Difference]: With dead ends: 521 [2023-12-02 19:44:44,426 INFO L226 Difference]: Without dead ends: 372 [2023-12-02 19:44:44,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=255, Invalid=1463, Unknown=4, NotChecked=0, Total=1722 [2023-12-02 19:44:44,427 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 104 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:44,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 189 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:44:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-02 19:44:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 359. [2023-12-02 19:44:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 290 states have (on average 1.2793103448275862) internal successors, (371), 309 states have internal predecessors, (371), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 19:44:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 453 transitions. [2023-12-02 19:44:44,449 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 453 transitions. Word has length 68 [2023-12-02 19:44:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:44,449 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 453 transitions. [2023-12-02 19:44:44,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:44:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 453 transitions. [2023-12-02 19:44:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 19:44:44,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:44,450 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:44,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 19:44:44,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 19:44:44,651 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:44:44,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:44,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1989027503, now seen corresponding path program 1 times [2023-12-02 19:44:44,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:44,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488653899] [2023-12-02 19:44:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:44,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:44,658 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:44:44,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374254956] [2023-12-02 19:44:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:44,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:44:44,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:44:44,659 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:44:44,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 19:44:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:44,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:44:44,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:44:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:44:44,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:44:45,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488653899] [2023-12-02 19:44:45,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:44:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374254956] [2023-12-02 19:44:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374254956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:44:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [998549914] [2023-12-02 19:44:45,661 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:44:45,662 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:44:45,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:44:45,662 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:44:45,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:44:47,320 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:44:47,399 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:44:48,345 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:44:48,352 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:44:58,059 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17468#(and (exists ((v_~counter~0_76 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (= ~counter~0 (+ v_~counter~0_76 1)) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 2 v_~counter~0_76) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))) (<= ~counter~0 50) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 19:44:58,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:44:58,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:44:58,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 19:44:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119757273] [2023-12-02 19:44:58,059 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:44:58,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:44:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:44:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 19:44:58,061 INFO L87 Difference]: Start difference. First operand 359 states and 453 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:44:58,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:58,366 INFO L93 Difference]: Finished difference Result 375 states and 460 transitions. [2023-12-02 19:44:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:44:58,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2023-12-02 19:44:58,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:58,369 INFO L225 Difference]: With dead ends: 375 [2023-12-02 19:44:58,369 INFO L226 Difference]: Without dead ends: 374 [2023-12-02 19:44:58,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 19:44:58,371 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:58,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 154 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:44:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-02 19:44:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 359. [2023-12-02 19:44:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 290 states have (on average 1.2758620689655173) internal successors, (370), 309 states have internal predecessors, (370), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 19:44:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 452 transitions. [2023-12-02 19:44:58,407 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 452 transitions. Word has length 69 [2023-12-02 19:44:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:58,407 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 452 transitions. [2023-12-02 19:44:58,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:44:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 452 transitions. [2023-12-02 19:44:58,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 19:44:58,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:58,408 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:44:58,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 19:44:58,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 19:44:58,609 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:44:58,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1530310544, now seen corresponding path program 1 times [2023-12-02 19:44:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89719844] [2023-12-02 19:44:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:58,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:44:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643652034] [2023-12-02 19:44:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:58,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:44:58,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:44:58,617 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:44:58,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 19:44:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:44:58,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:44:58,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:44:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 19:44:58,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:44:58,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:58,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89719844] [2023-12-02 19:44:58,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:44:58,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643652034] [2023-12-02 19:44:58,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643652034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:44:58,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:44:58,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:44:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929834964] [2023-12-02 19:44:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:44:58,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:44:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:44:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:44:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:44:58,708 INFO L87 Difference]: Start difference. First operand 359 states and 452 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:44:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:44:58,884 INFO L93 Difference]: Finished difference Result 379 states and 475 transitions. [2023-12-02 19:44:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:44:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 70 [2023-12-02 19:44:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:44:58,887 INFO L225 Difference]: With dead ends: 379 [2023-12-02 19:44:58,887 INFO L226 Difference]: Without dead ends: 377 [2023-12-02 19:44:58,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:44:58,888 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 65 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:44:58,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 80 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:44:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-02 19:44:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2023-12-02 19:44:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 300 states have (on average 1.2633333333333334) internal successors, (379), 318 states have internal predecessors, (379), 41 states have call successors, (41), 8 states have call predecessors, (41), 8 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 19:44:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 461 transitions. [2023-12-02 19:44:58,924 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 461 transitions. Word has length 70 [2023-12-02 19:44:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:44:58,925 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 461 transitions. [2023-12-02 19:44:58,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 19:44:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 461 transitions. [2023-12-02 19:44:58,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 19:44:58,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:44:58,926 INFO L195 NwaCegarLoop]: trace histogram [11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-12-02 19:44:58,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-02 19:44:59,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 19:44:59,127 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:44:59,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:44:59,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1330593057, now seen corresponding path program 3 times [2023-12-02 19:44:59,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:44:59,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636274933] [2023-12-02 19:44:59,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:44:59,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:44:59,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:44:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930050103] [2023-12-02 19:44:59,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 19:44:59,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:44:59,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:44:59,137 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:44:59,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 19:44:59,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 19:44:59,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:44:59,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:44:59,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:44:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-02 19:44:59,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:44:59,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:44:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636274933] [2023-12-02 19:44:59,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:44:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930050103] [2023-12-02 19:44:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930050103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:44:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808195495] [2023-12-02 19:44:59,444 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 19:44:59,444 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:44:59,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:44:59,444 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:44:59,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:45:00,580 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 19:45:00,586 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:45:05,799 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19754#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 19:45:05,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:45:05,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:45:05,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 19:45:05,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641020587] [2023-12-02 19:45:05,800 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:45:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:45:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:45:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-12-02 19:45:05,801 INFO L87 Difference]: Start difference. First operand 368 states and 461 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 19:45:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:06,179 INFO L93 Difference]: Finished difference Result 543 states and 680 transitions. [2023-12-02 19:45:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:45:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 73 [2023-12-02 19:45:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:06,182 INFO L225 Difference]: With dead ends: 543 [2023-12-02 19:45:06,182 INFO L226 Difference]: Without dead ends: 539 [2023-12-02 19:45:06,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 137 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-12-02 19:45:06,183 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 216 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:06,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 180 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:45:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-02 19:45:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 343. [2023-12-02 19:45:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 277 states have (on average 1.2743682310469313) internal successors, (353), 295 states have internal predecessors, (353), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-02 19:45:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 431 transitions. [2023-12-02 19:45:06,208 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 431 transitions. Word has length 73 [2023-12-02 19:45:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:06,208 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 431 transitions. [2023-12-02 19:45:06,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 19:45:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 431 transitions. [2023-12-02 19:45:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 19:45:06,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:06,209 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:45:06,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 19:45:06,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 19:45:06,410 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:45:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash 194986705, now seen corresponding path program 1 times [2023-12-02 19:45:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385230038] [2023-12-02 19:45:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:06,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:06,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:45:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679167175] [2023-12-02 19:45:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:06,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:45:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:45:06,420 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:45:06,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 19:45:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:06,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 19:45:06,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:45:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:45:07,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:45:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:45:10,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385230038] [2023-12-02 19:45:10,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:45:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679167175] [2023-12-02 19:45:10,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679167175] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:45:10,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [776124404] [2023-12-02 19:45:10,910 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:45:10,910 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:45:10,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:45:10,910 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:45:10,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:45:12,452 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:45:12,530 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:45:13,512 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:45:13,519 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:45:39,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21245#(and (<= ~counter~0 50) (<= (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= 9223372036854775808 (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)) (exists ((v_~counter~0_95 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 (+ v_~counter~0_95 1)) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 2 v_~counter~0_95) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))))' at error location [2023-12-02 19:45:39,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:45:39,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:45:39,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 19:45:39,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141947396] [2023-12-02 19:45:39,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:45:39,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:45:39,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:45:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:45:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1807, Unknown=4, NotChecked=0, Total=2070 [2023-12-02 19:45:39,856 INFO L87 Difference]: Start difference. First operand 343 states and 431 transitions. Second operand has 14 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 19:45:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:45:50,023 INFO L93 Difference]: Finished difference Result 431 states and 526 transitions. [2023-12-02 19:45:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 19:45:50,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 71 [2023-12-02 19:45:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:45:50,025 INFO L225 Difference]: With dead ends: 431 [2023-12-02 19:45:50,026 INFO L226 Difference]: Without dead ends: 430 [2023-12-02 19:45:50,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 161 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=373, Invalid=2593, Unknown=4, NotChecked=0, Total=2970 [2023-12-02 19:45:50,027 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 373 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:45:50,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 322 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-12-02 19:45:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-02 19:45:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 349. [2023-12-02 19:45:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 283 states have (on average 1.2685512367491165) internal successors, (359), 301 states have internal predecessors, (359), 39 states have call successors, (39), 8 states have call predecessors, (39), 8 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-02 19:45:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 437 transitions. [2023-12-02 19:45:50,057 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 437 transitions. Word has length 71 [2023-12-02 19:45:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:45:50,057 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 437 transitions. [2023-12-02 19:45:50,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 14 states have internal predecessors, (95), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 19:45:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 437 transitions. [2023-12-02 19:45:50,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 19:45:50,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:45:50,058 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:45:50,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 19:45:50,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 19:45:50,259 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:45:50,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:45:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash 925007152, now seen corresponding path program 1 times [2023-12-02 19:45:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:45:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311587079] [2023-12-02 19:45:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:45:50,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:45:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186319096] [2023-12-02 19:45:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:45:50,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:45:50,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:45:50,268 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:45:50,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 19:45:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:45:50,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 19:45:50,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:45:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 19:45:50,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:45:51,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:45:51,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311587079] [2023-12-02 19:45:51,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:45:51,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186319096] [2023-12-02 19:45:51,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186319096] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:45:51,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1881357018] [2023-12-02 19:45:51,810 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 19:45:51,810 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:45:51,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:45:51,810 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:45:51,810 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:45:53,302 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:45:53,379 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:45:54,365 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:45:54,371 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:46:20,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1881357018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:46:20,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:46:20,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [6] total 38 [2023-12-02 19:46:20,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731178557] [2023-12-02 19:46:20,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:46:20,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 19:46:20,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:46:20,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 19:46:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1540, Unknown=3, NotChecked=0, Total=1806 [2023-12-02 19:46:20,192 INFO L87 Difference]: Start difference. First operand 349 states and 437 transitions. Second operand has 34 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 19:46:35,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:46:37,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 19:46:44,817 WARN L539 Checker$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 19:46:50,740 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 [] [2023-12-02 19:46:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:46:53,279 INFO L93 Difference]: Finished difference Result 477 states and 595 transitions. [2023-12-02 19:46:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 19:46:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 81 [2023-12-02 19:46:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:46:53,283 INFO L225 Difference]: With dead ends: 477 [2023-12-02 19:46:53,283 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 19:46:53,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=852, Invalid=5950, Unknown=4, NotChecked=0, Total=6806 [2023-12-02 19:46:53,286 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 182 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 65 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:46:53,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 181 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1193 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2023-12-02 19:46:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 19:46:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 359. [2023-12-02 19:46:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 298 states have (on average 1.2718120805369129) internal successors, (379), 314 states have internal predecessors, (379), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 19:46:53,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 453 transitions. [2023-12-02 19:46:53,322 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 453 transitions. Word has length 81 [2023-12-02 19:46:53,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:46:53,322 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 453 transitions. [2023-12-02 19:46:53,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 19:46:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 453 transitions. [2023-12-02 19:46:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 19:46:53,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:46:53,323 INFO L195 NwaCegarLoop]: trace histogram [12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-02 19:46:53,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 19:46:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:46:53,524 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:46:53,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:46:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash -921316163, now seen corresponding path program 1 times [2023-12-02 19:46:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:46:53,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882232661] [2023-12-02 19:46:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:46:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:46:53,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:46:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975018979] [2023-12-02 19:46:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:46:53,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:46:53,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:46:53,534 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:46:53,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 19:46:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:46:53,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 19:46:53,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:46:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 19:46:53,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:46:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 19:46:53,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:46:53,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882232661] [2023-12-02 19:46:53,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:46:53,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975018979] [2023-12-02 19:46:53,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975018979] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:46:53,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [96325686] [2023-12-02 19:46:53,856 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-12-02 19:46:53,856 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:46:53,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:46:53,856 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:46:53,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:46:54,971 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2023-12-02 19:46:54,977 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:46:57,725 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24193#(and (<= 1 |#StackHeapBarrier|) (<= (div |ULTIMATE.start_main_~p~0#1| 2) 4611686018427387903) (= (mod |ULTIMATE.start_main_~p~0#1| 2) 0) (<= 0 (+ (div |ULTIMATE.start_main_~p~0#1| 2) 4611686018427387904)) (= |ULTIMATE.start_main_~d~0#1| (* (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 2)) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387903) (<= (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= ~counter~0 2147483647) (<= 0 (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 4611686018427387904)))' at error location [2023-12-02 19:46:57,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:46:57,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:46:57,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-12-02 19:46:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609815481] [2023-12-02 19:46:57,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:46:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 19:46:57,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:46:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 19:46:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1340, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 19:46:57,727 INFO L87 Difference]: Start difference. First operand 359 states and 453 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-02 19:46:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:46:58,331 INFO L93 Difference]: Finished difference Result 590 states and 739 transitions. [2023-12-02 19:46:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 19:46:58,331 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 88 [2023-12-02 19:46:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:46:58,334 INFO L225 Difference]: With dead ends: 590 [2023-12-02 19:46:58,334 INFO L226 Difference]: Without dead ends: 466 [2023-12-02 19:46:58,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 218 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=657, Invalid=2765, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 19:46:58,337 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 136 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:46:58,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 432 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:46:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-02 19:46:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 443. [2023-12-02 19:46:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 362 states have (on average 1.2513812154696133) internal successors, (453), 378 states have internal predecessors, (453), 52 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 19:46:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 557 transitions. [2023-12-02 19:46:58,386 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 557 transitions. Word has length 88 [2023-12-02 19:46:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:46:58,387 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 557 transitions. [2023-12-02 19:46:58,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 8 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-12-02 19:46:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 557 transitions. [2023-12-02 19:46:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 19:46:58,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:46:58,388 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:46:58,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 19:46:58,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:46:58,588 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:46:58,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:46:58,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1087709872, now seen corresponding path program 2 times [2023-12-02 19:46:58,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:46:58,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915435652] [2023-12-02 19:46:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:46:58,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:46:58,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:46:58,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379870454] [2023-12-02 19:46:58,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:46:58,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:46:58,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:46:58,597 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:46:58,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 19:46:58,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:46:58,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:46:58,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:46:58,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:47:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-02 19:47:00,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:47:10,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:47:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915435652] [2023-12-02 19:47:10,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:47:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379870454] [2023-12-02 19:47:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379870454] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:47:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [563793598] [2023-12-02 19:47:10,302 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:47:10,302 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:47:10,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:47:10,303 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:47:10,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:47:11,795 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:47:11,872 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:47:12,823 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:47:12,829 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:47:33,826 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25919#(and (<= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775809) 0) (<= ~counter~0 50) (exists ((v_~counter~0_127 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= (+ v_~counter~0_127 1) ~counter~0) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))))' at error location [2023-12-02 19:47:33,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:47:33,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:47:33,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 19:47:33,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143635828] [2023-12-02 19:47:33,826 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:47:33,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:47:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:47:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:47:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=1751, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 19:47:33,828 INFO L87 Difference]: Start difference. First operand 443 states and 557 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 19:47:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:47:35,857 INFO L93 Difference]: Finished difference Result 559 states and 704 transitions. [2023-12-02 19:47:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:47:35,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-12-02 19:47:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:47:35,860 INFO L225 Difference]: With dead ends: 559 [2023-12-02 19:47:35,860 INFO L226 Difference]: Without dead ends: 557 [2023-12-02 19:47:35,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 178 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=333, Invalid=1829, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 19:47:35,861 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 102 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:47:35,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 211 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 19:47:35,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-12-02 19:47:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 457. [2023-12-02 19:47:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 376 states have (on average 1.2367021276595744) internal successors, (465), 392 states have internal predecessors, (465), 52 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-02 19:47:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 569 transitions. [2023-12-02 19:47:35,944 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 569 transitions. Word has length 88 [2023-12-02 19:47:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:47:35,944 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 569 transitions. [2023-12-02 19:47:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 19:47:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 569 transitions. [2023-12-02 19:47:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 19:47:35,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:47:35,945 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 19:47:35,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 19:47:36,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:47:36,152 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:47:36,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:47:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash -640732243, now seen corresponding path program 2 times [2023-12-02 19:47:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:47:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949351657] [2023-12-02 19:47:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:47:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:47:36,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:47:36,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532700555] [2023-12-02 19:47:36,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:47:36,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:47:36,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:47:36,160 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:47:36,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 19:47:36,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 19:47:36,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:47:36,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 19:47:36,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:47:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 37 proven. 9 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-02 19:47:54,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:48:00,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:48:00,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949351657] [2023-12-02 19:48:00,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:48:00,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532700555] [2023-12-02 19:48:00,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532700555] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:48:00,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [784710570] [2023-12-02 19:48:00,071 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:48:00,071 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:48:00,072 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:48:00,072 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:48:00,072 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:48:01,556 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:48:01,633 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:48:02,632 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:48:02,639 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:48:33,872 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27496#(and (<= ~counter~0 50) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (exists ((v_~counter~0_137 Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (= ~counter~0 (+ v_~counter~0_137 1)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))))' at error location [2023-12-02 19:48:33,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:48:33,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:48:33,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 19:48:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469191008] [2023-12-02 19:48:33,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:48:33,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:48:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:48:33,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:48:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2005, Unknown=3, NotChecked=0, Total=2352 [2023-12-02 19:48:33,874 INFO L87 Difference]: Start difference. First operand 457 states and 569 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:48:36,407 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 [0] [2023-12-02 19:48:38,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 19:48:40,681 WARN L539 Checker$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 19:48:42,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 19:48:44,861 WARN L539 Checker$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 19:48:52,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:48:54,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:49:02,319 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 19:49:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:03,472 INFO L93 Difference]: Finished difference Result 602 states and 738 transitions. [2023-12-02 19:49:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:49:03,472 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2023-12-02 19:49:03,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:03,475 INFO L225 Difference]: With dead ends: 602 [2023-12-02 19:49:03,475 INFO L226 Difference]: Without dead ends: 600 [2023-12-02 19:49:03,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=414, Invalid=2444, Unknown=4, NotChecked=0, Total=2862 [2023-12-02 19:49:03,477 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 114 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 19 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:03,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 271 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 533 Invalid, 8 Unknown, 0 Unchecked, 22.2s Time] [2023-12-02 19:49:03,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-12-02 19:49:03,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 520. [2023-12-02 19:49:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 434 states have (on average 1.237327188940092) internal successors, (537), 449 states have internal predecessors, (537), 58 states have call successors, (58), 12 states have call predecessors, (58), 12 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 19:49:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 653 transitions. [2023-12-02 19:49:03,547 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 653 transitions. Word has length 89 [2023-12-02 19:49:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:03,548 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 653 transitions. [2023-12-02 19:49:03,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 19:49:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 653 transitions. [2023-12-02 19:49:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 19:49:03,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:03,549 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:49:03,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 19:49:03,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:03,749 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:49:03,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1203010171, now seen corresponding path program 1 times [2023-12-02 19:49:03,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:03,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048392546] [2023-12-02 19:49:03,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:03,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:49:03,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076194270] [2023-12-02 19:49:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:03,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:03,759 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:49:03,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 19:49:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:03,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:49:03,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:49:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-02 19:49:04,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:49:04,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048392546] [2023-12-02 19:49:04,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:49:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076194270] [2023-12-02 19:49:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076194270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:49:04,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [334941997] [2023-12-02 19:49:04,689 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:49:04,689 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:49:04,689 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:49:04,689 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:49:04,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:49:06,295 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:49:06,415 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:49:07,485 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:49:07,493 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:49:43,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29242#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) 0) (<= ~counter~0 50) (exists ((v_~counter~0_147 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 (+ v_~counter~0_147 1)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= 2 v_~counter~0_147) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))) (= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|) (mod |ULTIMATE.start_main_~A~0#1| 4294967296)))' at error location [2023-12-02 19:49:43,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:49:43,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:49:43,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 19:49:43,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073614944] [2023-12-02 19:49:43,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:49:43,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:49:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:49:43,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1317, Unknown=6, NotChecked=0, Total=1560 [2023-12-02 19:49:43,938 INFO L87 Difference]: Start difference. First operand 520 states and 653 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 19:49:44,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:44,263 INFO L93 Difference]: Finished difference Result 738 states and 907 transitions. [2023-12-02 19:49:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:49:44,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 95 [2023-12-02 19:49:44,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:44,266 INFO L225 Difference]: With dead ends: 738 [2023-12-02 19:49:44,266 INFO L226 Difference]: Without dead ends: 618 [2023-12-02 19:49:44,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 168 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=237, Invalid=1317, Unknown=6, NotChecked=0, Total=1560 [2023-12-02 19:49:44,267 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 77 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:44,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 270 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:49:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-02 19:49:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 603. [2023-12-02 19:49:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 511 states have (on average 1.2211350293542074) internal successors, (624), 526 states have internal predecessors, (624), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-02 19:49:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 752 transitions. [2023-12-02 19:49:44,339 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 752 transitions. Word has length 95 [2023-12-02 19:49:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:44,339 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 752 transitions. [2023-12-02 19:49:44,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 19:49:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 752 transitions. [2023-12-02 19:49:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 19:49:44,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:44,340 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 19:49:44,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 19:49:44,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-02 19:49:44,541 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:49:44,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash -437106496, now seen corresponding path program 1 times [2023-12-02 19:49:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131045301] [2023-12-02 19:49:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:44,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:49:44,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829499625] [2023-12-02 19:49:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:44,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:44,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:44,552 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:49:44,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 19:49:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:44,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 19:49:44,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:49:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:49:44,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:49:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:49:45,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131045301] [2023-12-02 19:49:45,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:49:45,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829499625] [2023-12-02 19:49:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829499625] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:49:45,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2090377262] [2023-12-02 19:49:45,211 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 19:49:45,211 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:49:45,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:49:45,212 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:49:45,212 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:49:49,194 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:49:49,200 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:50:23,934 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31488#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= ~counter~0 50) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 19:50:23,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:50:23,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:50:23,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 19:50:23,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098446739] [2023-12-02 19:50:23,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:50:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:50:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:50:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:50:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1192, Unknown=4, NotChecked=0, Total=1482 [2023-12-02 19:50:23,936 INFO L87 Difference]: Start difference. First operand 603 states and 752 transitions. Second operand has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 12 states have internal predecessors, (129), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 19:50:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:50:24,284 INFO L93 Difference]: Finished difference Result 751 states and 948 transitions. [2023-12-02 19:50:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:50:24,284 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 12 states have internal predecessors, (129), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 103 [2023-12-02 19:50:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:50:24,289 INFO L225 Difference]: With dead ends: 751 [2023-12-02 19:50:24,289 INFO L226 Difference]: Without dead ends: 749 [2023-12-02 19:50:24,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 257 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=355, Invalid=1447, Unknown=4, NotChecked=0, Total=1806 [2023-12-02 19:50:24,291 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 216 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:50:24,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 273 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:50:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-02 19:50:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 640. [2023-12-02 19:50:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 542 states have (on average 1.2380073800738007) internal successors, (671), 557 states have internal predecessors, (671), 70 states have call successors, (70), 12 states have call predecessors, (70), 12 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 19:50:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 811 transitions. [2023-12-02 19:50:24,403 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 811 transitions. Word has length 103 [2023-12-02 19:50:24,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:50:24,403 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 811 transitions. [2023-12-02 19:50:24,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.727272727272727) internal successors, (129), 12 states have internal predecessors, (129), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 19:50:24,404 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 811 transitions. [2023-12-02 19:50:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 19:50:24,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:50:24,405 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 19:50:24,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 19:50:24,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 19:50:24,605 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:50:24,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:50:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash -790239549, now seen corresponding path program 1 times [2023-12-02 19:50:24,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:50:24,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719704024] [2023-12-02 19:50:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:50:24,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:50:24,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:50:24,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113088345] [2023-12-02 19:50:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:50:24,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:50:24,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:50:24,616 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:50:24,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 19:50:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:50:24,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:50:24,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:50:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:50:24,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:50:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:50:28,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:50:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719704024] [2023-12-02 19:50:28,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:50:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113088345] [2023-12-02 19:50:28,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113088345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:50:28,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2044342056] [2023-12-02 19:50:28,089 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:50:28,089 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:50:28,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:50:28,089 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:50:28,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:50:31,101 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:50:31,178 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:50:32,129 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:50:32,135 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:50:44,838 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33821#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= (+ 9223372036854775809 |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) (<= ~counter~0 50) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 19:50:44,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:50:44,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:50:44,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2023-12-02 19:50:44,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351017807] [2023-12-02 19:50:44,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:50:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:50:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:50:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:50:44,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1788, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 19:50:44,841 INFO L87 Difference]: Start difference. First operand 640 states and 811 transitions. Second operand has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 19:50:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:50:45,244 INFO L93 Difference]: Finished difference Result 870 states and 1117 transitions. [2023-12-02 19:50:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 19:50:45,245 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 108 [2023-12-02 19:50:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:50:45,248 INFO L225 Difference]: With dead ends: 870 [2023-12-02 19:50:45,248 INFO L226 Difference]: Without dead ends: 858 [2023-12-02 19:50:45,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 271 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=325, Invalid=2027, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 19:50:45,250 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 327 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:50:45,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 272 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:50:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-12-02 19:50:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 631. [2023-12-02 19:50:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 537 states have (on average 1.1843575418994414) internal successors, (636), 548 states have internal predecessors, (636), 70 states have call successors, (70), 12 states have call predecessors, (70), 12 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 19:50:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 776 transitions. [2023-12-02 19:50:45,335 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 776 transitions. Word has length 108 [2023-12-02 19:50:45,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:50:45,336 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 776 transitions. [2023-12-02 19:50:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.692307692307692) internal successors, (139), 14 states have internal predecessors, (139), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 19:50:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 776 transitions. [2023-12-02 19:50:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 19:50:45,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:50:45,337 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 19:50:45,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 19:50:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:50:45,537 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:50:45,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:50:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1272377884, now seen corresponding path program 1 times [2023-12-02 19:50:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:50:45,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858653460] [2023-12-02 19:50:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:50:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:50:45,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:50:45,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550357711] [2023-12-02 19:50:45,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:50:45,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:50:45,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:50:45,549 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:50:45,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 19:50:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:50:45,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:50:45,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:50:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:50:45,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:50:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:50:47,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:50:47,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858653460] [2023-12-02 19:50:47,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:50:47,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550357711] [2023-12-02 19:50:47,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550357711] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:50:47,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1957411980] [2023-12-02 19:50:47,622 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:50:47,622 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:50:47,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:50:47,623 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:50:47,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:50:49,166 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:50:49,243 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:50:50,197 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:50:50,204 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:51:20,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36292#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= ~counter~0 50) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 19:51:20,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:51:20,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:51:20,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 19:51:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828101323] [2023-12-02 19:51:20,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:51:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:51:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:51:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:51:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1793, Unknown=5, NotChecked=0, Total=2070 [2023-12-02 19:51:20,831 INFO L87 Difference]: Start difference. First operand 631 states and 776 transitions. Second operand has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 19:51:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:51:22,594 INFO L93 Difference]: Finished difference Result 857 states and 1022 transitions. [2023-12-02 19:51:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 19:51:22,594 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 109 [2023-12-02 19:51:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:51:22,599 INFO L225 Difference]: With dead ends: 857 [2023-12-02 19:51:22,599 INFO L226 Difference]: Without dead ends: 855 [2023-12-02 19:51:22,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=407, Invalid=2558, Unknown=5, NotChecked=0, Total=2970 [2023-12-02 19:51:22,601 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 468 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:51:22,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 506 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:51:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-02 19:51:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 699. [2023-12-02 19:51:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 599 states have (on average 1.1769616026711185) internal successors, (705), 610 states have internal predecessors, (705), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-02 19:51:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 857 transitions. [2023-12-02 19:51:22,694 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 857 transitions. Word has length 109 [2023-12-02 19:51:22,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:51:22,694 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 857 transitions. [2023-12-02 19:51:22,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.846153846153847) internal successors, (141), 14 states have internal predecessors, (141), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 19:51:22,695 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 857 transitions. [2023-12-02 19:51:22,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 19:51:22,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:51:22,696 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:51:22,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-02 19:51:22,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 19:51:22,896 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:51:22,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:51:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash -721507840, now seen corresponding path program 1 times [2023-12-02 19:51:22,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:51:22,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497450388] [2023-12-02 19:51:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:51:22,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:51:22,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:51:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325817845] [2023-12-02 19:51:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:51:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:51:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:51:22,905 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:51:22,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 19:51:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:51:22,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:51:22,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:51:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 19:51:23,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:51:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:51:23,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:51:23,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497450388] [2023-12-02 19:51:23,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:51:23,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325817845] [2023-12-02 19:51:23,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325817845] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:51:23,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612230871] [2023-12-02 19:51:23,330 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 19:51:23,330 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:51:23,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:51:23,331 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:51:23,331 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:51:26,281 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:51:26,289 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:52:02,981 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38852#(and (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0) (exists ((v_~counter~0_205 Int)) (and (<= 1 |#StackHeapBarrier|) (= ~counter~0 51) (= v_~counter~0_205 50) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))))' at error location [2023-12-02 19:52:02,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:52:02,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:52:02,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-02 19:52:02,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706046815] [2023-12-02 19:52:02,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:52:02,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 19:52:02,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:52:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 19:52:02,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=3064, Unknown=8, NotChecked=0, Total=3422 [2023-12-02 19:52:02,983 INFO L87 Difference]: Start difference. First operand 699 states and 857 transitions. Second operand has 26 states, 26 states have (on average 5.653846153846154) internal successors, (147), 26 states have internal predecessors, (147), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-02 19:52:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:52:03,685 INFO L93 Difference]: Finished difference Result 799 states and 959 transitions. [2023-12-02 19:52:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 19:52:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.653846153846154) internal successors, (147), 26 states have internal predecessors, (147), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 110 [2023-12-02 19:52:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:52:03,689 INFO L225 Difference]: With dead ends: 799 [2023-12-02 19:52:03,689 INFO L226 Difference]: Without dead ends: 787 [2023-12-02 19:52:03,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 263 SyntacticMatches, 8 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=789, Invalid=6175, Unknown=8, NotChecked=0, Total=6972 [2023-12-02 19:52:03,690 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 154 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:52:03,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 651 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:52:03,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-02 19:52:03,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 771. [2023-12-02 19:52:03,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 663 states have (on average 1.1568627450980393) internal successors, (767), 674 states have internal predecessors, (767), 80 states have call successors, (80), 16 states have call predecessors, (80), 16 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 19:52:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 927 transitions. [2023-12-02 19:52:03,799 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 927 transitions. Word has length 110 [2023-12-02 19:52:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:52:03,800 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 927 transitions. [2023-12-02 19:52:03,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.653846153846154) internal successors, (147), 26 states have internal predecessors, (147), 10 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2023-12-02 19:52:03,800 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 927 transitions. [2023-12-02 19:52:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 19:52:03,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:52:03,801 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:52:03,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 19:52:04,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:52:04,001 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:52:04,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:52:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1871883693, now seen corresponding path program 1 times [2023-12-02 19:52:04,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:52:04,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923858719] [2023-12-02 19:52:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:52:04,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:52:04,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326090740] [2023-12-02 19:52:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:04,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:52:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:52:04,011 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:52:04,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 19:52:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:52:04,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 19:52:04,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:52:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-02 19:52:04,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:52:04,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:52:04,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923858719] [2023-12-02 19:52:04,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:52:04,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326090740] [2023-12-02 19:52:04,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326090740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:52:04,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:52:04,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:52:04,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106084123] [2023-12-02 19:52:04,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:52:04,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:52:04,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:52:04,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:52:04,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:52:04,352 INFO L87 Difference]: Start difference. First operand 771 states and 927 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 19:52:04,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:52:04,670 INFO L93 Difference]: Finished difference Result 1054 states and 1278 transitions. [2023-12-02 19:52:04,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:52:04,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 113 [2023-12-02 19:52:04,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:52:04,673 INFO L225 Difference]: With dead ends: 1054 [2023-12-02 19:52:04,673 INFO L226 Difference]: Without dead ends: 726 [2023-12-02 19:52:04,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:52:04,674 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 109 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:52:04,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 225 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:52:04,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-02 19:52:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 631. [2023-12-02 19:52:04,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 533 states have (on average 1.174484052532833) internal successors, (626), 544 states have internal predecessors, (626), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 19:52:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 766 transitions. [2023-12-02 19:52:04,789 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 766 transitions. Word has length 113 [2023-12-02 19:52:04,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:52:04,790 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 766 transitions. [2023-12-02 19:52:04,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 19:52:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 766 transitions. [2023-12-02 19:52:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 19:52:04,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:52:04,791 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 19:52:04,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 19:52:04,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:52:04,992 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:52:04,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:52:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1917407547, now seen corresponding path program 3 times [2023-12-02 19:52:04,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:52:04,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435928775] [2023-12-02 19:52:04,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:04,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:52:05,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:52:05,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091063645] [2023-12-02 19:52:05,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 19:52:05,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:52:05,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:52:05,001 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:52:05,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 19:52:05,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 19:52:05,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:52:05,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 19:52:05,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:52:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:52:05,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:52:06,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:52:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435928775] [2023-12-02 19:52:06,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:52:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091063645] [2023-12-02 19:52:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091063645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:52:06,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [856363622] [2023-12-02 19:52:06,040 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:52:06,040 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:52:06,040 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:52:06,040 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:52:06,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:52:07,500 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:52:07,578 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:52:08,583 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:52:08,590 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:52:45,704 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43535#(and (exists ((v_~counter~0_215 Int)) (and (= ~counter~0 (+ v_~counter~0_215 1)) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 3 ~counter~0))) (<= ~counter~0 50) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-12-02 19:52:45,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:52:45,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:52:45,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 19:52:45,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126929393] [2023-12-02 19:52:45,705 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:52:45,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:52:45,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:52:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:52:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1528, Unknown=6, NotChecked=0, Total=1806 [2023-12-02 19:52:45,706 INFO L87 Difference]: Start difference. First operand 631 states and 766 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 19:52:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:52:46,040 INFO L93 Difference]: Finished difference Result 635 states and 766 transitions. [2023-12-02 19:52:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:52:46,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2023-12-02 19:52:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:52:46,044 INFO L225 Difference]: With dead ends: 635 [2023-12-02 19:52:46,044 INFO L226 Difference]: Without dead ends: 634 [2023-12-02 19:52:46,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 197 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=272, Invalid=1528, Unknown=6, NotChecked=0, Total=1806 [2023-12-02 19:52:46,045 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 35 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:52:46,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 314 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:52:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-02 19:52:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 631. [2023-12-02 19:52:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 533 states have (on average 1.172607879924953) internal successors, (625), 544 states have internal predecessors, (625), 70 states have call successors, (70), 16 states have call predecessors, (70), 16 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 19:52:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 765 transitions. [2023-12-02 19:52:46,129 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 765 transitions. Word has length 115 [2023-12-02 19:52:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:52:46,129 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 765 transitions. [2023-12-02 19:52:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 19:52:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 765 transitions. [2023-12-02 19:52:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 19:52:46,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:52:46,130 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 19:52:46,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 19:52:46,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 19:52:46,331 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 19:52:46,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:52:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash -87679641, now seen corresponding path program 2 times [2023-12-02 19:52:46,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:52:46,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878128035] [2023-12-02 19:52:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:52:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:52:46,340 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 19:52:46,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470146040] [2023-12-02 19:52:46,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:52:46,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:52:46,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:52:46,341 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:52:46,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bac25329-a87e-4a18-a8ba-5b48f154f80b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 19:52:46,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 19:52:46,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:52:46,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 19:52:46,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:52:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:52:47,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:55:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 19:55:56,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:55:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878128035] [2023-12-02 19:55:56,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:55:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470146040] [2023-12-02 19:55:56,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470146040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:55:56,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34384380] [2023-12-02 19:55:56,375 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 19:55:56,375 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:55:56,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:55:56,376 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:55:56,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:55:57,829 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:55:57,906 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 19:55:58,932 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 19:55:58,940 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:56:58,324 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45802#(and (exists ((v_~counter~0_230 Int)) (and (= (+ v_~counter~0_230 1) ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 2 v_~counter~0_230) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))) (<= ~counter~0 50) (<= (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (<= 9223372036854775808 (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~r~0#1|)))' at error location [2023-12-02 19:56:58,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:56:58,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:56:58,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-02 19:56:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826903883] [2023-12-02 19:56:58,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 19:56:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 19:56:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:56:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 19:56:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=3014, Unknown=8, NotChecked=0, Total=3422 [2023-12-02 19:56:58,326 INFO L87 Difference]: Start difference. First operand 631 states and 765 transitions. Second operand has 27 states, 26 states have (on average 6.038461538461538) internal successors, (157), 27 states have internal predecessors, (157), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 19:57:46,418 WARN L293 SmtUtils]: Spent 47.24s on a formula simplification. DAG size of input: 264 DAG size of output: 161 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 19:57:48,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []